Demopædia
Multilingual Demographic Dictionary
unified second edition, English volume
This document has been generated the 23 August 2013.
Introduction
History
The first edition
In 1953, the Population Commission of the United Nations requested the preparation of a Multilingual Demographic Dictionary, a task in which the International Union for the Scientific Study of Population (IUSSP) offered to collaborate. In 1955, an ad hoc Committee under the chairmanship of P. Vincent of France was established to prepare the English, French and Spanish versions of the Dictionary. The Committee included as members: C.E. Dieulefait (Argentina), H.F. Dorn (United States), E. Grebenik (United Kingdom), P. Luzzato-Fegiz (Italy), M. Pascua (Switzerland) and J. Ros Jimeno (Spain). The French and English versions of the Dictionary were published in 1958 and the Spanish version in 1959. Versions in ten other languages appeared between that date and 1971.
The second edition
Because of the rapid development of demography and population studies during the 1960s, in 1969 the Population Commission recommended the updating of the Multilingual Demographic Dictionary, a task that was pursued once more in collaboration with IUSSP. A new Committee on International Demographic Terminology was set up under the chairmanship of P. Paillat (France) and started work in 1972 with financial support from the U.S. Bureau of the Census. Other members of the Committee were: A. Boyarski (USSR), E. Grebenik (United Kingdom), K. Mayer (Switzerland), J. Nadal (Spain) and S. Kono (Japan). The Committee submitted a revised draft to the consideration of a hundred or so demographic centres that provided comments. In 1976, Prof. Louis Henry was commissioned by IUSSP to edit the work and produce the second edition of the Dictionary in French. IUSSP then requested Prof. Etienne van de Walle to adapt and translate the French second edition into English. The second edition in English was published in 1982. Eventually, the second edition would be issued in all official languages of the United Nations.
From the second edition to Demopædia
The series of Multilingual Demographic Dictionaries is one of the most enduring products in the history of demography and one of the most fruitful thanks to the work and engagement of scholars who have translated the original French or English versions into their own languages. As a result of those efforts, the international community can benefit today from access to 14 language versions of the second edition of the Demographic Dictionary, mainly thanks to the initiative undertaken by Nicolas Brouard in compiling the out-of-print versions of the Dictionaries in different languages and developing a Wiki-based presentation of all of them as a web-accessible Multilingual Demographic Dictionary. The United Nations Population Division, IUSSP and the Comité national français of the IUSSP have all supported this work in order to facilitate access to these valuable reference texts.
Why on-line?
Because the Demographic Dictionaries in various languages were conceived as tools to serve people in many countries, making them accessible via the Internet was thought mandatory. Today, thanks to the project led by Nicolas Brouard, standard demographic terminology and its meaning is only two clicks away for students, teachers, professors, researchers, government officials, journalists, non-governmental organizations and the public at large, all working in their own languages.
Functionality
Visitors to Demopædia can consult the different language modules, read them, or download and print them. All copyright owners have made this possible. Users can search for a demographic term, surf between linked terms and expressions, or switch to another language or edition. Because each Dictionary consists of thematic chapters, terms are located in context, providing not only a definition of each term but also an understanding of the subject matter for which a term is relevant. Each language module has a built-in index that facilitates navigation and cross-referencing. In addition, the Wiki platform provides powerful tools for further development. It is envisaged that the next stage of the project will allow specialists to post additions, revisions or corrections to the second edition.
What is next?
Demographic knowledge made huge advances since the last editions of the Dictionary have been published. There is a clear sense that the structure and texts need updating. Doing it in a traditional format of ’live’ panels and working groups would be hardly feasible. Developing on-line a renewed edition of multilingual encyclopedic demographic dictionary should be efficient and will unleash the potential of wide cooperation of professionals. Demopædia will host this project.
Demopædia also has the potential to become a platform for sharing and building a wider knowledge base in demography and population studies. Our vision is an extensive and constantly evolving encyclopedia on population, serving the world community and benefiting from influxes of ideas and texts.
For an unified second edition of the dictionaries as an intermediate step
Since the training in Marrakech, a lot of work has been done to improve the quality of the scanned texts. Specific computer programs using parsers have cross check the texts of the first and second editions in about 12 to 13 languages in order to detect the missing text terms in one or another language.
The first analysis of this work reveals that the second edition is not as rigorous as the first was. The first edition was the result of the Commission on terminology during the mid 50’s, but the second was first revised in French in 1981 and translated and adapted to English in 1982 and in Spanish in 1985, German in 1987 etc. up to Czech in 2005.
Some terms, expressions and even complete paragraphs have not been translated into English, but in Spanish, Arabic, German etc.. And a few sentences and paragraphs have been added into the English second edition but never translated into the French second edition which was already published. Also the Spanish second edition added a few new text terms which are not translated into any other language but Arabic.
The German second edition (1987) defined a lot of more modern text terms which haven’t been translated in any other language.
Editions, published after 1987, did not add any new term and thus a natural limit is 1987 (German) but harmonization between the three languages of the IUSSP could be an important step.
In many language specific editions, the numbering of the text terms differed (even between French and English) most of times due to errors but sometimes because a text term was not translated. The advantage of the technical work is to highlight the missing text terms in order to decide if the word is not used in this language or if it is an omission.
Preface
Preface of the first edition (1958)
At its fourth session the Population Commission of the United Nations requested the Secretary-General to include the preparation of a multilingual demographic dictionary in the Secretariat’s work programme. Several months later the International Union for the Scientific Study of Population, at its General Assembly in Geneva, offered to collaborate with the United Nations in this project and set up a sub-committee to prepare a plan of work. At the fifth session of the Population Commission the Secretary-General was asked to accept the Union’s offer, and the Dictionary Committee was given the task of drafting versions of the dictionary in English, French and Spanish.
The primary purpose of the dictionary is to serve as a useful tool for technical translation. It consists of separate sections, each of which presents in one language the technical terms used in demography; the text is followed by an alphabetical index of terms. The texts in, the various languages correspond to one another, and equivalent terms in different languages have the same reference number so that it is possible to identify them in the different volumes. The Committee entrusted with the task of preparing the three initial volumes consisted of:
- Paul E. Vincent (France) (Chairman and Rapporteur);
- Carlos E. Dieulefait (Argentina);
- Harold F. Dorn (U.S.A.);
- Eugene Grebenik (United Kingdom);
- Pierpaolo Luzzatto-Fegiz (Italy);
- Marcelino Pascua (Switzerland);
- Jose Ros Jimeno (Spain).
The first draft consisted of a basic French text which was prepared in the Institut national d’études demographiques in France under the general supervision of M. Vincent. This text was translated into English and Spanish by Messrs. Grebenik and Ros Jimeno respectively. The draft bad to be completed somewhat hurriedly in view of the approach of the World Population Conference, at which participants received a provisional edition, dated June 1954, published by the United Nations. The dissemination of this provisional edition made it possible for a number of experts to comment critically on the draft and gave the Committee an opportunity to take account of the comments received. Some of the imperfections of the first draft were due to the fact that the basic text had been prepared in a single language only—French. It was clear that considerable differences existed between the terminologies in English and in the Romance languages, and that a compromise between different conceptions was essential. It was further realized that a mere list of equivalences was not sufficient but that definitions of terms would have to be included in the text, so that translators might have the opportunity of noting differences in usage between different languages. The Committee recommended accordingly and, the recommendation having been approved by the Union, Mr. Grebenik was requested to prepare a new text in English, making use of the basic French text. Mr. Grebenik’s new text was then revised in collaboration with M. Vincent, and a second draft produced in English and French, which was used by Sr. Ros Jimeno in preparing the Spanish version. The three drafts wrere then submitted for approval to the Dictionary Committee, the Council of the Union and a number of experts, with a view to producing a final edition.
In publishing the English, French and Spanish sections of the Multilingual Demographic Dictionary it is necessary to emphasize certain points. Firstly, the dictionary is the result of collaboration, not only between the three principal editors, but also on the part of all members of the Committee. The final version owes much to the recommendations made by a number of demographers who read various versions of the draft and commented on them, frequently in great detail. Most of their comments were accepted either in whole or in part. Some other comments the editors—perhaps mistakenly—felt unable to accept.
The editors were frequently faced with difficult problems of choice between a number of possible formulations. The nature of the dictionary, however, makes it impossible to give a detailed justification for using one version, rather than another. Final responsibility for choice rests on each of the principal editors, in this English section, Mr. Eugene Grebenik. At the same time the editors were not free to prepare a text entirely according to their own wishes. The necessity to produce parallel texts in different languages and the desire to take into consideration the comments that were made, have frequently led them to include certain expressions or definitions which they would have preferred to formulate differently had they been entirely free agents. Nevertheless, they agreed to accept responsibility for the text as it stands.
It must also be stressed that this dictionary does not pretend to be a treatise on demography. In preparing the text the fundamental aim has always been that it should serve as an aid to technical translation, and it was therefore necessary to consider the terminology of various languages in order to make the dictionary truly multilingual. Languages differ in their structure, and demographic terminology depends, moreover, not only on the language but on the development of demographic research in various countries, so that it is sometimes illogical and at variance with the requirements of science. Occasionally, terms in different languages are not wholly equivalent. In one language there may exist a profusion of terms referring to a particular subject which in another is practically neglected. In the text, notes to the different paragraphs have been used in an attempt to reduce as far as possible the inconveniences arising from these difficulties. Had the aim been to produce a set of definitions in one language, without taking account of the others, the result would have been very different. This preoccupation also accounts for a certain imbalance in the contents. It has seemed useful in certain cases to include in the dictionary terms which are not properly demographic but are frequently encountered in demographic literature and do not always appear in general dictionaries, thus causing difficulties to translators who are not expert in the subject. In considering the needs of translators the Committee has been led to adopt the principle that no opinions should be expressed on particular usages, and no recommendations made unless there was a general consensus of opinion that a particular nomenclature was undesirable. The dictionary is therefore not normative. It does not lay down new definitions. Where definitions are included, their main purpose is to establish terminological equivalences and to make them more accurate. The necessity for extreme conciseness in these definitions has occasionally led to a certain lack of precision. Standardization of definitions requires studies of a different kind. In order to avoid any misunderstanding, a list of recent documents published by various international organizations concerned with the definition of various demographic concepts is given at the end of the alphabetical index. The reader will have to consult these studies when he has to solve a problem connected with definition rather than translation.
The purpose of the dictionary will be better served if it is extended to other languages. Some sections in other languages have already been planned, or are in draft. Moreover, the Population Commission at its ninth session requested the Secretariat to study the possibility of preparing a Russian section of the dictionary. Experience will show whether the compromise that has been reached between the English and Romance languages can be extended to other Germanic and Slavonic languages as well as to those outside the Indo-European group.
Preface of the second edition (1982)
The Population Commission of the United Nations in its fourth session requested the UN Secretariat to include the preparation of a multilingual demographic dictionary in its work programme. The Union offered to collaborate in this project, and at the end of the fifth session of the Population Commission an ad hoc Committee* was given the task of drafting a multilingual demographic dictionary in English, French and Spanish.
Notwithstanding its great complexity, this work was successfully completed and the French and English volumes were published in 1958. Other versions appeared later: Spanish (1959), Italian (1959), German (1960), Finnish (1964), Russian (1964), Czech (1965), Polish (1966), Swedish (1969), Portuguese (1969), Arabic (1970) and Serbo-Croatian (1971).
At its fifteenth session, held in Geneva in November 1969, the Population Commission of the United Nations adopted a recommendation suggesting that the U.N. Secretary-General should collaborate closely with the Union in carrying out projects of mutual interest, such as the preparation of a multilingual dictionary of demographic terms.
At a previous meeting in Liege in April 1969, the Council of the Union noted with great satisfaction that the dictionary had, in every respect, come up to the expectations of demographers all over the world; the Council felt, however, that the time had come to bring the dictionary up to date, in view of the profound changes which had affected the science of demography during the decade following its publication.
A new Committee** was therefore set up, and thanks to the generous financial aid granted by the U.S. Bureau of the Census, work on the project was started in 1972 and completed in 1974.
The Committee’s field of action was not limited to its members, since a hundred or so demographic centres responded to its appeal by giving their comments on the drafts submitted to them, In this way, an immense documentation was collected which dealt not only with the definitions of demographic terms and concepts, but also with the arrangement of the book. All this was placed at the disposal of Professor Louis Henry, to whom in 1976 the Union entrusted the task of editing the final version of the second French edition of the demographic multilingual dictionary. Thus the new text prepared by Louis Henry is a synthesis of the one edited by the late regretted Paul Vincent for the first edition of the French version, and the texts prepared by the Committee on International Demographic Terminology.
The Union subsequently requested Professor Etienne van de Walle to adapt and translate the French version of the dictionary into English. I would like to take this opportunity of thanking him warmly for having successfully carried out such a very exacting task.
I also wish to expess my deep gratitude to my predecessor, Professor Massimo Livi Bacci who, during his mandate, was one of the principal promoters of this new series of dictionaries.
This English edition, following on the French one, is thus the second in a collection which will continue to increase as time goes on and provide support to the international community of demographers.
Georges Tapinos Secretary-General
* Multilingual Demographic Dictionary Committee : Chairman : P. Vincent (France), Members: C.E. Dieulefait (Argentina), H.F. Dorn (U.S.A.), E.Grebenik (Great Britain), P. Luzzato-Fegiz (Italy), M. Pascua (Switzerland), J. Ros Jimeno(Spain).
** Committee on International Demographic Terminology: Chairman: P. Paillat (France); Members: A. Boyarski (U.S,S.R.), E. Grebenik (Great Britain), K. Mayer (Switzerland), J. Nadal (Spain), S. Kono (United Nations-Japan); Observers: S. Baum and J. Siegel (U.S. Bureau of the Census — U.S.A.); Research Assistants: A. Hill (Great Britain), A. Lifshitz (France) and A. Saez (Spain).
Acknowledgements
Although many persons have contributed to various stages of the preparation of this dictionary, Etienne van de Walle would like to acknowledge the assistance of Alex Mogielnicki in translating the French version, and the advice of his colleagues, Ann R.Miller, Samuel H. Preston, Norman Ryder and Christopher Tietze who were kind enough to comment on initial versions of the English text. It owes of course a great deal to the First Edition, and to the preliminary texts prepared by the committee of the Union.
Preface of the unified second edition
The unification of the second edition of the dictionary seemed necessary when computerization of all scanned paper volumes has been performed. The Demopædia databases showed significant omissions from each of the major releases published during the 1980s (French 1981, English 1982, Spanish in 1985 and Germany in 1987). In 1988, the Arabic edition and the tri-lingual English-French-Arabic edition, had already but partially filled the gaps by comparing the French and English translations, but had failed to translate 92 new concepts introduced in the German edition. The Chinese editions (1994), Japanese (1994), Czech (2005) derived from the English version only like the Web only editions in Russian (2008), Portuguese (2008) and Polish (2010). On the other hand, the Italian edition, published on Web in 2010, drifted mainly from the French edition. Let us describe by the following example, the consequences of untranslated terms and the importance of a unified edition: a French term like “Nourrisson” which was retained, by the Commission of United Nations terminology in the 50s, and which appeared in any language of the first editions of the multilingual dictionary disappeared in the second English edition.
As an example, the forthcoming unified dictionary will be enriched by the term: nourrisson in French, lactante in Spanish, Brustkind in German, kojenec in Czech, lattante in Italian etc. or, if a common noun doesn’t exist like in English, an expression like child at the breast was used in the first English edition of 1958 and is reinserted in the unified English edition, permitting to new modules, derived from English only, to keep this lovely word, even if babies were not so appreciated before the demographic transition!
New translations into several Asian languages being under consideration due to the demographical importance of this continent, it became mandatory to achieve this unification before engaging new translations. It is still an ongoing process, concerning all languages previously published; and the first unified French language edition was published at the 46th Annual Conference of the Italian Statistical Society in June 2012 in Rome. The French edition fills a gap because the last copies of the second edition of 1981 were distributed at the symbolic price of € 1 at the IUSSP conference in Tours (2005). An Italian edition was also very necessary because the first edition was published in 1959 and had never been updated.
Harmonized editions should be available soon or later in the twelve languages already published on paper volumes and on-line in their original edition as well as in four to six new Asian languages.
Although it is regrettable that this harmonized edition is not a new edition, which could be enriched with new concepts of contemporary demography, such as reproductive health, disability and dependency, international migrations, demographic windows, decreasing population, retirement etc... But the comparisons of the first two editions demonstrated to us that the important concepts of the population sciences resided mainly in the first edition: terminological elements have been selected carefully by the Commission on Terminology of the United Nations during the ’50s in order to define our discipline and are mostly still valid.
We may also regret not having removed obsolete or even inappropriate words. Etienne van de Walle, lead author of the second English edition of 1982, told me at the Conference of Tours in 2005, that is to say, shortly before his premature death, his desire to participate in the new edition especially at removing terms on eugenics, a term or theory which already in 1981 had only an historical interest. Changes to the original editions have been done a minima, preserving the original spirit of the 1980s.
These changes justify the paper publication of this unified edition. New volume will also be available on paper once the unification in the specific language is complete. This unification is a mandatory prerequisite for a third edition.
Publishing digital books allow indeed a paper publication at low cost even if at demand. Thus the work of Joseph Larmarange, a demographer at the French “Research and Development Institute” (IRD) working at the mixed research unit CEPED, permits to download from the multilingual demographic dictionary website (http://demopaedia.org/tools) any unified edition in various electronic formats (HTML, PDF or EPUB). It is also possible to order a hard copy from a publishing company on demand. The web site is also a place for generating a “current” version of the dictionary or even multilingual indexes.
If a publication with broad distribution does not seem justified for languages that have already been published in the past, an impression "on demand" seems to meet certain needs, especially when it will be available in several languages in the same format. In addition, a print "on demand" includes the corrections of the inevitable errors and shells.
It seems to us that the main authorship of the multilingual dictionary returns to the first work of the Population Commission of the United Nations chaired by Paul Vincent. Himself is partly in debt of the revolutionary indexing system of numbered paragraph which appeared in the work of John Edwin Holmstrom. He proved in his "Report on Interlingual Scientific and Technical Dictionaries" written in 1949 that unique entries in a dictionary were inadequate when the dictionary included more than two or three languages.
Therefore, authorships are multiple and multilingual too; the detailed names are mentioned in each of the prefaces of the two possible editions which we reproduced before this current generic preface of all unified versions. If we had to mention explicit authors we should gratify, Paul Vincent for the first French edition of 1958, Eugene Grebenik for the first English edition of 1958, Louis Henry for the second French edition of 1981, Etienne van de Walle for the second English edition of 1982 and Guillermo A. Macció for the second Spanish edition. The second German edition was coordinated by Charlotte Höhn in 1987.
This multiple paternity has led us to move the status of all the different editions of the multilingual demographic Dictionary under the Creative Commons Share Alike license (CCSA). Thus, since the computerization of old paper editions, any additional work to the dictionary which is published on-line requires the acceptance of this license. It permits to consider the exact contribution of each author involved. Note also that the MediaWiki software which is used by Demopaedia for both, browsing the dictionary and editing, is also under the same open-source license.
Once we know a little handling of Demopaedia which is identical to Wikipedia, you can easily compare the text of the first edition with that of the unified edition. The digitized text uses the same paragraph numbering (101, 102 etc..), each being bundled within the same page (eg page 10 http://ko-ii.wikipedia/wiki/10). If the reader wants to know the reasons that led a writer to adopt a particular reformulation, the discussion page lists the problems that have arisen and the decisions that have been taken (eg http://ko-ii.wikipedia/wiki/Talk:10). All members of professional associations of population studies in partnership with the Demopædia project are allowed and encouraged to contribute to the discussion pages. This is already the case for members of the IUSSP and soon for members of the Population Association of America. Rights to edit the dictionary itself, that is, not only the related discussion page, are given to a limited number of authors.
It is also the goal of the project Demopædia to invite professional demographers to update the multilingual demographic Dictionary by providing this wiki platform. But as it is a first step to create new pages and even new chapters such as "reproductive health" already mentioned, we believe that it is easier to adopt a more open structure similar to that of Wikipedia, where consistency between languages is not essential. The site of this free encyclopedia is the URL http://fr.demopaedia.org for French and http://en.demopaedia.org for the English version as well as http://ko.demopaedia.org for Korean, etc.
The new pages created gradually should allow us to better measure both, the extent of our discipline and its new terminology. A third edition of the multilingual dictionary could come someday.
The goal of science is to share results with colleagues around the world but also to fellow countrymen and thus, it seems necessary that the scientific vocabulary can be well translated and understood so that the media as well as students can use it safely. We also note that in some countries such as Sweden, there is no second edition of the dictionary, giving the impression that the scientific vocabulary doesn’t need to be renewed in Swedish, but English only. By contrast, a clear need has been felt at the IUSSP Conference in Marrakesh by Asian academics who, under pressure from many local students who do practice English, are struggling with rough translation of English demographical terms (even old terms) to be adopted by the entire community. Today, in India, there are several languages spoken by a number of users exceeding 70 million which is the total number of humans whose mother tongue is French. Malayalam is spoken, in Kerala at least, by as many speakers as Thai-speaking Thais. Hopefully this wiki platform is a multilingual opportunity to discuss the understanding of new concepts conveyed in the English scientific journals but also in international conferences still in French or Spanish and national conferences in many different languages.
This project could not have been completed without the ongoing support of the Population Division of the United Nations in the person of Hania Zlotnik who was her director from 2005 to 2012. This support took the form of the organization of Demopædia workshops, including Paris (2007) and Marrakesh (2009). Special thanks to Sergey Ivanov (UNPD), co-organizer of two workshops and author of the first draft of the Russian edition. Giudici Cristina and Elena Ambrosetti, authors of this Italian translation which has been published concurrently, have established a partnership between the University La Sapienza and the French Committee of the IUSSP, to organize a workshop on the Wiki technology in Rome in 2011. Some materials due to Laurent Toulemon’s tutorial at INED in Paris having been reused, we are extremely happy with the Franco-Italian collaboration which is driving the development of the Demopædia project, particularly in Chiang Mai at the end of August 2012. The last Chiang Mai workshop, funded by INED, co-organized by Géraldine Duthé (INED) and locally organized by Sophie Le Coeur (IRD/INED), Joseph Larmarange and Elena Ambrosetti was an opportunity to train 13 senior demographers in the Demopaedia/Wiki technology in order to produce a unified edition in six Asian new languages (Korean, Indonesian, Malaysian, Nepalese, Thai and Vietnamese). They should be completed by the next IUSSP conference of Busan in August 2013.
Also thank to Christine Gandrille, secretary of the French National Committee of the IUSSP, who scanned and corrected many of the issues due to her exceptional knowledge of several languages, Françoise Gubry and Martine Deville, librarians respectively at CEPED and INED for their obstinacy to find the old dictionaries such as the Arabic or Estonian editions. Their advices in thesaurus and index technology were also very helpful.
Finally, I would like to thank the French National Committee that I had the honor to preside until January 2012 and all members of the three successive bureaus for their help in starting and conducting the Demopædia project since 2005. Websites are requesting light but continuous supports which are provided by INED in hosting the server. In 20012, IUSSP created a group of interest so that the Demopædia project could take an international dimension.
Nicolas Brouard
Director of research at INED
Coordinator of the IUSSP Demopædia project
July 2013
Notice
Notes on the use of the dictionary
The dictionary consists of a text supplemented by notes in small type and an alphabetical index. All terms which are printed in bold face in the text and the notes are listed in the index. Where an expression consisting of several words is printed in bold face it will appear in the index under each of the principal constituent words, e. g., "density of population" is indexed under D as "Density population", and under P as "Population density".
Each term has a reference number which is composed of the number of the paragraph in which it appears and an identification number. For terms appearing in the body of the text the identification number is printed immediately after the term, and for those in the notes it is the number of the note; the latter also relates the note to the corresponding term in the text. Terms occurring in the notes which are not in the text are followed by an asterisk (*) in the index and reference numbers.
Due to the harmonization of all second editions of the dictionary, new terms have been introduced in this unified second edition of the English volume compared with the original second edition of 1982. These new terms are starred (★).
Text terms with the same reference numbers in the various sections of the dictionary correspond to one another. For instance, the translator who wishes to find the equivalent French term for a given expression in English should look up the English expression in the alphabetical index of the English section and find the correspondingly numbered paragraph in the French section. It is strongly recommended that the whole paragraph in which the expression occurs in both sections should be read in order to guard against faulty translation due to slight differences in usage; this will also be useful if, in one of the languages, no term exists to express a particular concept.
Only terms in the text itself are comparable from one volume to one other using their number. Terms in the notes are specific to each volume and don’t correspond between volumes.
Different terms which are used to express the same concept have the same reference number. Any term which is susceptible of different interpretations may have two or more reference numbers which refer to the appropriate contexts.
Terms printed in bold face in notes do not necessarily correspond to one another in the different sections. Moreover, in paragraphs 303 and 344, which deal with the administrative structures of different countries and with their educational systems, there is no correspondence between the different language sections. Terms introduced in these paragraphs have no identification numbers; the paragraphs themselves are subdivided into lettered sections, A and B in the English section referring to Great Britain and the United States of America respectively.
Exploring the dictionary on demopaedia.org
Comparing the dictionary between several languages will be easier online on the web site http://en-ii.demopaedia.org where hypertext links allow you to switch between the different volumes of the dictionary.
The dictionary is divided into sections or sub-chapters, each of them having is own page on the wiki. Each section is identified by a two-figures number. Usually, the section number of a paragraph corresponds to the two first figures of the paragraph number (the paragraph 104 is therefore located in the section 10). There are few exceptions: paragraphs 360, 361 and 362 are in section 35, paragraph 640 in section 63 and paragraphs 810 and 811 in section 80. Section breaks are indicated in the text by an asterism (⁂).
The URL of a section is obtained by adding the section number to http://en-ii.demopaedia.org/wiki/. Therefore, paragraph 357 could be seen online at http://en-ii.demopaedia.org/wiki/35. For more details, please read online http://en-ii.demopaedia.org/wiki/Instructions.
Tools to search a term in all indexes or to generate a multilingual index are available at http://www.demopaedia.org/tools.
Citation
Since the dictionary has been digitized, it is now available in different formats (online, printed books, electronic books...). Although this unified second edition will not change significantly, some minor corrections could be apply to the text. Therefore, the copy you are currently reading, generated at a specific date, could differ slightly from the online version.
To cite the multilingual demographic dictionary, it is recommended to consult first the last version online, the website being the reference. You can cite the dictionary as follow:
Demopædia, Multilingual Demographic Dictionary, unified second edition, English volume, http://en-ii.demopaedia.org, consulted the consultation_date.
If you need to cite a specific paragraph of the dictionary, indicate the number of the paragraph (as any page number will differ between the different formats). For example, to cite paragraph 211:
Demopædia, Multilingual Demographic Dictionary, unified second edition, English volume, § 211, http://en-ii.demopaedia.org/wiki/21, consulted the 21st of August 2013.
List of abbreviations
| adj. | adjective |
| n. | noun |
| pl. | plural |
| syn. | synonym |
| v. | verb. |
Chapter 1 • General concepts
101
Demography1 is the scientific study of human populations primarily with respect to their size, their
structure2 and their development; it takes into account the quantitative aspects of their general characteristics. It is the core of the
population sciences8★, which in the broadest sense include interdisciplinary fields such as
economic demography (
104-1),
social demography (
104-2),
population genetics (
104-4),
historical demography (
102-1),
mathematical demography (
102-6) as well as contributions from the law, medicine, epidemiology (
423-6), sociology, psychology, geography and philosophy. In statistical terminology any collection of distinct elements may be called a
population3, a word that is synonymous with
universe3. However, in demographic usage, the term
population4 refers to all of the
inhabitants5 of a given area, though on occasion it may be used for part of the inhabitants only [e.g., the
school-age population (cf.
346-7), the
marriageable population (cf.
514-2)]. Such groups are properly called
sub-populations6. The term population is often used to denote more specifically the
size7, i.e., the
total number7 of the aggregate referred to in no.
101-4.
- Demography, n. - demographic, adj. - demographer, n.: a specialist in demography.
- Population, n. - Note that this term may also be used adjectivally as a synonym for demographic, e.g., in population problems, population analysis, population studies.
- Inhabitant, n. - inhabit, v.: to occupy as a place of settled residence.
102
Certain sub-disciplines within demography have received special names reflecting their objectives or their methodology.
Historical demography1 deals with populations of the past for which written records are available. In the absence of such sources, the study of ancient populations takes the name of
paleo-demography2 . In
descriptive demography3 the numbers, geographical distribution, structure and change of human populations are described by means of
population statistics4 or
demographic statistics4 . The treatment of quantitative relations among demographic phenomena in abstraction from their association with other phenomena, is called
theoretical demography5 or
pure demography5 ; because of its resort to various mathematical methods, in practice it is identified with
mathematical demography6. A piece of research that applies the tools of
demographic analysis (
103-1) to an actual population is often called a
demographic study7. This study can focus on the
current demographic situation8★ or
current demographic conditions8★, i.e. the population change and its indicators during a short and recent period. All the preceding disciplines place a great emphasis on the numerical aspects of the phenomena, and are sometimes referred to as
formal demography9, when they apply only to the size and structure of the population. In contrast the broader term
population studies10 also includes the treatment of relations between demographic events and social, economic or other phenomena.
103
Demographic analysis1 is that branch of formal demography which controls for the effect of population size and structure on
demographic phenomena2 by isolating the effects of each demographic variable from the others, the latter of which are called
disturbing phenomena3★. It also studies the relations between demographic variables and how they interact to form population structures. A distinction is made between
cohort analysis4 or
generational analysis4 which focuses on a well defined
cohort (cf.
117-2) followed through time, and
cross-sectional analysis5 or
period analysis5 which focuses on the demographic phenomena that occur during a precise time interval (such as a calendar year) among several cohorts.
- Cohort analysis is a form of longitudinal analysis which deals with aggregates of persons possessing the same characteristic. Panel analysis follows the same individuals case by case.
104
The study of relations between demographic phenomena on one hand and economic and social phenomena on the other forms another branch of the subject. The terms
economic demography1 and
social demography2 have been used by some writers. Demography also deals with the study of
population quality3. This phrase may be used with reference to all sorts of social and personal characteristics. In a slightly different sense the term primarily refers to the distribution and transmission of
hereditary characteristics (
910-3) which are the subject of
population genetics4 .
Human ecology5 is the study of the distribution and organization of communities with attention to the operation of competitive and cooperative processes and has part of its subject matter in common with demography. Fields of research and methodology are even more intertwined in the case of demography and
human geography7★. It is also the case for
biometry6 or
biometrics6 and
epidemiology8★ which deal with the application of statistical methods to all forms of biological and medical research.
- Population genetics is distinct from human genetics, which deals with the transmission of inheritable characteristics in man: population genetics includes the study of the distribution and transmission of hereditary traits in plant, animal and human populations.
- Ecology, n. - ecological, adj. - ecologist, n.: a specialist in ecology.
- Biometry, n. - biometrics, n. - biometric, adj. - biometrician, n.: a specialist in biometry. The terms biostatistics, n. - biostatistical, adj. - and biostatistician, n. are frequently encountered and are synonymous with the terms given for biometry.
105
Finally, there is the study of
population theories1. This term should not be confused with
theoretical demography (
102-5). Population theories are designed to explain or predict the interaction between changes in population and economic, social, psychological or other factors; they include purely conceptual treatments. Population theories occasionally form the basis of
population policy2 (cf. §
930), which deals with measures designed to influence population changes.
⁂
110
A fundamental
statistical unit1 used in demography is the
individual2 or
person2 . The term
head2 has also been employed but this usage is now largely out of date. The
household3, a socio-economic unit, consists of individuals who live together. Statistical definitions of the household vary. According to the definition which has been recommended as an international standard a household consists of a group of individuals who share
living quarters (
120-1) and their principal meals. The term
hearth3 has been used in the past, showing that in the past members of the household used to share the same fire. Classifications of households also vary between different countries and different enquiries. Most classifications involve the distinction of two types:
private households4 and
collective households5 . An individual living by himself is considered to be a
one-person household6 . A
boarder7 is a person other than a domestic servant, who is unrelated to other members of the household and who habitually takes his meals with the household. A
lodger8 or
roomer8, on the other hand, does not habitually take his meals with the household. These two categories may or may not be included in the household for statistical purposes.
- Private households are called family households when their members are related.
- Collective households may include institutional households composed of persons who reside in specifically designated institutions (e.g. hospitals, prisons, etc.). They may also include unrelated persons who reside in group quarters (120-1*) other than institutions. However, recent internationally recommended definitions restrict the terms household and household population to private households, and refer otherwise to persons not living in households.
111
When a
private household (
110-4) contains several persons they are called
members of the household1 and one of them will be the
head of the household2. There is no universally accepted rule as to who is considered the head of the household; in some cases it may be the
principal earner3. On most census schedules there appears a question dealing with the
relationship4 (
114-3*) of members of the household to its head. This enables a distinction to be made between different groups in
composite households5 or
complex households5 which contain members of more than one
biological family or
nuclear family (
113-1). A composite or complex household can be disaggregated into several
nuclei6, including a
primary nucleus7 and
secondary nuclei8. The nuclei are more commonly called
families (
112-1). The
primary family9★ is that of the household head when it is defined, the others are called
secondary families10★.
Household size11 denotes the number of persons included in the household.
- The term householder is sometimes used to refer to the head of the household. The term headship is frequently encountered, as in headship ratio, the ratio of the number of heads of households by age, sex or other characteristics to the corresponding categories of population.
- The nucleus is also called a conjugal family unit.
112
The
family1 (cf. §
113 and §
115) is a different unit which must be carefully distinguished from the
household (
110-3). It is defined primarily by reference to relationships which pertain to or arise from marriage, reproduction or adoption, all of which are regulated by law or custom. The fundamental relationships are those established between a couple by marriage — and that existing between a couple as
parents2, i.e.,
father3 and
mother4, and their
children5, i.e.,
sons6 and
daughters7 .
- Parent, n. - parental, adj. - parenthood, n.: the state of being or becoming a parent.
- Father, n. - paternal, adj.
- Mother, n. - maternal, adj.
- Son, n. - filial, adj.
- Daughter, n. - filial, adj.
113
Parents and their children are sometimes referred to as the biological family1, or nuclear family1 . Brothers2 and sisters3, without distinction of sex are called sibs4 or siblings4 . Siblings with only one parent in common are called half-brothers5 or half-sisters6. Extended families7 are larger family units generally composed of combinations of nuclear families. The vertically extended family8★ consists of three or more generations living in the same household or very close to each other. The horizontally extended family9★ involves siblings with their spouses and their children living together. The vertically extended family can generate special types such as the stem family10★ in which only the heir and his family may continue to reside with their parents.
- The term simple family and elementary family are frequent synonyms for the terms biological or nuclear family. In a restricted sense, such as in fertility analyses, the term biological family may refer to parents and their own children, excluding adopted children.
- The terms composite family and joint family are frequent synonyms for the term extended family. In the most general sense of the term, an extended family may refer to all members of a kinship group.
114
Persons related through common
descent1 from the same
progenitor2 or
ancestor2 are called
blood relatives3 or
genetic relatives3 . The terms
kin3 and in an aggregate sense
kinship group3 are also used. The
degree of relationship4 is generally computed by reference to the number of steps which are necessary before a common ancestor is reached, but there are many different methods of computation. The fundamental relation in each of these steps is the
filial relation5 (cf.
112-6* and
112-7*) of child to parent, which is the reciprocal of
parenthood6 (
112-2*) i.e. the relation of a couple or of a father or a mother to
offspring7 or
progeny7 . Blood relationship must be distinguished from
relationship by marriage8, which marriage establishes between one spouse and the kin of the other..
- Descent, n. - descendant, n.: one linked through descent
- Ancestor, n. - ancestral, adj.
- Relative, n. - related, adj. - relationship, n.: the state of being related. The term relative is used for persons related by blood or marriage.
Kin, n. and adj. - kinship, n.: the state of being kin. Relatives is sometimes also used for the collection of all kin.
- Progeny, n.: this term may also be used for all of the descendants of a common ancestor.
- In certain countries persons related by marriage may be referred to as in-laws.
115
The
family1 (cf.
112-1) as a unit in demographic studies representing all or part of a
household (
110-3) needs to be specifically defined, and definitions for different purposes may vary. A
statistical family1 or
census family1 generally consists of all members of a household who are related through blood, adoption or marriage. A household may, or may not include a family. A statistical family cannot comprise more than one household, although a household may include more than one family. In some countries the definition of a statistical family may approximate to the
biological family (
113-1); in others the definition may be based on the
family nucleus2 consisting of either a married couple without children, a married couple with one or more never-married children or one parent with one or more never-married children. These may either form the census family itself or be the core of such a family. Married couples living with their children are called
traditional families3★. A
broken family4★ is one in which one of the parents has been lost by death, divorce or desertion.}} Families where one parent, separated or widowed, lives with her children may be also be named
single parent families4★. Married couples, widowed or separated people who, at the time of the declaration, have no more children living in the household, may have special name, like in Germany,
residual family (“Restfamilie”)5★. When these types of families are living within a household, they are called
family household6★.
- In the United States of America, a sub-family is a married couple with or without children, or a parent with one or more never-married children, under 18 years of age, living as members of a household and related to but not including the head of the household and his wife. In Great Britain, the primary family unit consists of parents and their children, the parents’ sibs and ancestors.
116
In demographic literature, the term
generation1 has been given a precise meaning and refers to a group of persons born within a specified period of time, generally taken as a calendar year. The term
cohort2 denotes a group of persons who experience a certain event in a specified period of time: thus birth cohort is a synonym for generation in the sense of
116-1, a marriage cohort is a group of persons married within a defined period, etc. In demography as in genealogy the term
generation3 may also be used to denote the descendants of a group of persons who are themselves a generation in the sense of
116-1. Thus the children of a group of migrants are often referred to as the
second generation9★. Occasionally we also use the expression
third or fourth generation. Generations can be qualified according to their current age and, for example, the
young and rising generation6★, the
middle-aged generation7★ or the
generation in the prime of life7★ and the
older generation8★ while the age limits are often vague and therefore require clarification. Cohorts of people born during historical periods related to low birth rates (respectively high) can be referred as
low-birth-rate cohorts11★ (respectively
high-birth-rate cohorts10★). Occasionally consideration is restricted to lines of descent through one sex only, thus a
male generation4 or
paternal generation4 are the sons of a generation of males, a
female generation5 or
maternal generation5 the daughters of a generation of females. These distinctions are normally used when the length of a generation or
mean interval between successive generations is calculated. (cf.
713-1).{Note|11|Because of the depletion of births during the first World war, particularly in France, the French term "
- Cohort, n.: the term cohort analysis is used to denote a method of analyzing data, in which the experience of individual cohorts is studied throughout their lives, or other specified periods.
For purposes of military service the number of men who become liable to conscription in a given year is sometimes called the class of that year. In the United States the same term is used for a group of students who complete their studies at a particular school or university in a particular year.
⁂
120
A
dwelling1, a
dwelling unit1, or
living quarters1 are statistical abstractions denoting housing accommodations appropriate for occupation by one household (
110-3). The size of a dwelling is measured by the number of its
rooms2 or by its
surface area3. The
degree of crowding4 is a function of the size of the dwelling and the number of its inhabitants. Crowding standards are applied to distinguish
overcrowded dwellings5 and
insufficiently occupied dwellings6 . An
unoccupied dwelling7 is a dwelling which is not used for residence either permanently or occasionally.
- A dwelling may consist of a private house, or part thereof, or a flat or an apartment which forms part of a block of flats or tenement house. In the United States of America a distinction is made between a one-household structure and a multiple-household structure, and all persons who are not members of households are regarded as living in group quarters. Statistics of houses by the number of floors or stories are sometimes provided. It should be noted that in Europe, the ground floor is not generally counted, whereas in the United States of America it is called the first floor.
- There is no general rule as to whether or not the kitchen is included in the number of rooms.
- Overcrowded, adj. - overcrowding, n.
121
The occupier of a dwelling may be its owner1 or a tenant2 who rents it from an owner, who is then called landlord1. A tenant who rents a dwelling to a sub-tenant is called the principal tenant5★. A sub-tenant3 is a person who rents from a tenant. A person occupying a dwelling to which he or she has no legal title is called a squatter4 .
- A dwelling or apartment may be rented with or without furniture in which case it is respectively called a furnished dwelling or an unfurnished dwelling.
⁂
130
The terms
population statistics1 or
demographic statistics1 refer to
numerical data2 about populations, which are based on
observations3 . After such observations have been
collected4 on appropriate
forms (
206-1), the documents are
edited5 and
verified5 to eliminate obvious inconsistencies. The data are
tabulated6 into certain
groups7 or
classes8 with common characteristics.
Data processing9 includes all the steps between collecting and
statistical analysis10★ (
132-1).
- Statistics, n. - statistical, adj. - statistician, n.: specialist in statistics.
- Collect, v. - collection, n.
- Edit, v. - editing, n. Verify, v. - verification, n.
- Tabulate, v. - tabulation, n.
- Process, v. - processing, n.
131
Data are usually referred to as raw data1 or crude data1 prior to their processing and tabulation and basic data1 or primary data1 after processing and tabulation. Basic data usually consist of series2 of absolute numbers3 which are put together in the form of statistical tables4 . In such tables the data are generally classified with respect to certain variables5 or variates5 such as age, number of children, etc., or with respect to certain attributes6 or characteristics6 (i.e. sex, marital status, etc.). Where data are classified with respect to several variables or attributes simultaneously the tables are called cross-tabulations7 or contingency tables7 . Summary tables8 give information in less detail than do individual tables9 .
- When the data relate to individuals (110-2) as their unit of analysis they may be referred to as micro-data. Aggregate data or macro-data relate to a unit of analysis other than an individual, for example, a nation or an administrative unit within a nation. Micro-data can be derived from several sources such as a field survey (203-5) or a sample of vital registration records. A new source of micro-data is the census public use sample, which is a systematic or a random sample of census returns that is made available for analytical purposes to interested individuals.
- A table which presents the distribution of a single variable or attribute within a population is generally called a frequency table.
132
Using the basic data generally involves two phases.
Analysis1 aims at isolating the components of the observed numbers (size, structure, extraneous factors and the phenomenon under investigation);
synthesis2 is the process of recombining the disaggregated components in various ways. Either phase involves the
calculation3 or
computation3 of
indices4 which may be denoted by various names (cf. §
133). In contrast to the basic data, these indices are referred to as
results6 or
synthetic indices5★. In a more restricted sense an
index7 (pl.
indexes or
indices) or
index number7 is a ratio showing the value of a given quantity relative to a
base8, which is usually taken as
100. Some indices are good
indicators9 of a complex situation; thus the infant mortality rate is sometimes used as an indicator of the health status of a population.
- Analysis, n. - analytical, adj. - analyze, v.
- Calculate, b. - calculation, n. - calculator, n.: a machine with minimal to modest data storage capabilities designed to facilitate a modest amount of arithmetic and statistical calculating.
Compute, v. - computation, n. - computer, n.: a machine system designed to effect the transmission, storage and calculations of large data sets; it permits arithmetic and statistical calculations as well as logical processing of data. In a dated sense, the terms calculator and computer were used to designate the person(s) engaged in the computations.
133
One of the first stages of
analysis (
132-1) consists of relating the population totals or number of events to other totals or numbers. The resulting indices are given various names. A
ratio6★, also used for various purposes, is the quotient obtained by dividing quantities of the same kind. When the dividend and divisor belong to the same kind but different categories (men and women, children and women, different age-groups, for example) an other terminology might be used in non English languages, relating both quantities with a
specific ratio1 (like a sex ratio). A
proportion2 is a ratio which indicates the relation in magnitude of a part to the whole. A
percentage3 is a proportion expressed per hundred. A
rate4 is a special type of ratio used to indicate the
relative frequency5 of the occurrence of a particular event within a population or a sub-population in a specified period of time, usually one year. Although this usage is recommended, the term has steadily acquired a wider meaning and is often incorrectly used as a synonym for ratio (e.g. labor force participation rate, which is actually a proportion).
- Proportion, n. - proportional, adj.
- Rates are generally given per thousand, and where the term "rate" is used without additional qualification "per thousand" is generally understood. Some rates, however, are given per ten thousand, per one hundred thousand, or per million e.g. cause-specific death rates (421-10). On other occasions rates may be given per person or per hundred. The word "rate" is sometimes omitted, thus one may find the expression "a mortality of ten per thousand," but this is not recommended.
- The total fertility rate (cf 639-4) is the sum of age-specific fertility rates (cf 633-9) over the age reproductive period and thus lost its inverse temporal dimension (per year). The difference is as important as between length and surface or velocity and acceleration. The term synthetic index (cf 132-5) is preferred in some languages to avoid the confusion with the inverse temporal dimension (per year) of a rate: number of demographic events divided by the time exposure or person-years. If used, the term rate in the expression ’’total fertility rate’’ refers to the implicit ’’per woman’’, which is not enough to qualify as a rate but enough for a dimensionless ratio.
134
The
relative frequency (
133-5) of a non-renewable event is often regarded as an empirical measure of the
probability1 of occurrence of that event. This presumes that all the individuals who appear in the denominator have been
exposed to risk3 in some way, i.e. there must have been a
chance2 or
risk2 that the event in question could happen to them. The use of the term "risk" does not imply that the event in question is in any way unwanted; thus the term "risk of marriage" is used. The population is often divided into different sub-groups, in which the risk of the event in question is less variable between individuals than in the population as a whole; the subgroup is more
homogeneous4 with respect to the risk than the relatively
heterogeneous5 whole population. Rates calculated for such subgroups are called
specific rates6 as opposed to
crude rates (
136-8) which apply to the population as a whole.
General rates7 sometimes involve an age restriction, as in the instance of
general fertility rates (
633-7).
- Probability, n. - probable, adj.
- Homogeneous, adj. - homogeneity, n.
- Heterogeneous, adj. - heterogeneity, n.
135
Age-specific rates1 are computed for single years of age or for age groups (age-group specific rate2★ or age group-specific rate2★). Duration-specific rates3 take into account the time elapsed since a baseline event4 or event-origin4 such as marriage or a previous birth. Central rates10 are obtained by dividing the number of events during a year, or some other period (often five years) either by the average population6 or mid-year population6 or by the number of person-years7 of exposure to the event in question during that year or period; the number of person-years is the sum, expressed in years, of the exposure time for all individuals in the observed group, over the year or period. The term rate is often used also for another type of measure, obtained by dividing the number of non-renewable events in a year or a period of years by the size of the cohort considered at the beginning of the year or period; this peasure is sometimes called an attrition probability5 or more simply a probability5, and contrasted with the central rate, defined earlier. In this paragraph, the word "period" has referred to a length of time. In the expression period rates8, however, the word is used in its chronological meaning and refers to a specific calendar year or group of years; it is opposed to cohort rate9 or generation rate9.
- The word quotient, used in French for this type of rate, has sometimes been used in English.
136
Data are called
provisional1 if they are based on incomplete or insufficiently controlled observations. They are replaced by
final2 data when the observations are complete. Rates based on such data are called
provisional rates3 and
final rates4 respectively. Where information becomes available after figures have already been published,
revised rates5 may be issued. The expression
corrected rate6 usually implies that defective data or inappropriate methods have yielded results which are either misleading or of limited value for the purpose in hand and that an effort has been made to correct this, e.g., correction for underenumeration, correction for migration, correction for seasonal movement.
Standardized rates7 or
adjusted rates7 are designed to make it possible to compare different populations with respect to a variable, e.g. fertility or mortality, where the influence of another variable e.g. age, is held constant. The term
corrected rate7 has been used by some demographers as a synonym for standardized rate. When the data do not permit direct estimation of the rates (small population, for example), the use of
standard rates9★ (cf.
403-6 for example) computed from data of good quality and applied to the real population, provides an indirect estimation of the expected number of events which can be compared with the observed number of events. Unstandardized rates are called
crude rates8. Although they may be used to measure actual trends, false inferences may result from their uncritical use when populations with different
structures (
144-4) are compared.
137
Demographic
indices (
132-7) will in most cases relate to a particular
period of observation1 ; this is true in particular of most
rates (cf.
133-4). An
annual rate2 will relate to a period of twelve months. Where observations are collected for a number of years and then averaged, the term
mean annual rate3 or
average annual rate3 is often used for the result. Where rates are calculated for periods different from a year they are
converted to an annual basis4 through multiplication by an appropriate factor.
Instantaneous rates5 are sometimes computed; they relate to an infinitesimal period of time, cf. for instance the
instantaneous death rate (
431-4) or the
instantaneous rate of population growth (
702-5).
138
The primary objective of
cohort analysis (
103-4) is the study of the
intensity1 and
tempo2 or
timing2 of demographic phenomena. The intensity of a phenomenon initiated by one
non-renewable event (
201-4) may be measured by either the
ultimate frequency3 of occurrence for the given event or by its complement. The ultimate frequency reflects the proportion of persons who would have experienced the event, in the absence of extraneous influences, during the existence of the
cohort (
116-2). The intensity of a phenomenon initiated by a
renewable event (
201-5) such as births or migratory moves, can be measured by the
mean number of events4 per person in the cohort, also in the absence of extraneous influences. Tempo or timing may be defined as the distribution over time within the cohort of the demographic events corresponding to the investigated phenomenon. The results of
cross-sectional analysis or
period analysis (
103-5) are summarized by
period measures5 — as opposed to
cohort measures6 — which can be constructed in various fashions. A commonly used technique consists in attributing the observed rates pertaining to various ages or durations to a
hypothetical cohort7 or
synthetic cohort7 .
- This ultimate frequency or its complement has received various names according to the phenomenon studied: parity progression ratio (637-7), frequency of definitive celibacy (521-1) ... It is best not to use the word proportion as part of these names, and to reserve it for observed proportions. For instance, the frequency of definitive celibacy must be kept distinct from the proportion single at a given age, as recorded in a census.
- It is not unusual to give the same name to the observed mean number of events per person, and to the number that would have been observed in the absence of extraneous influences such as mortality. Distinct phrases should be used; for instance, the number of children ever born (637-2) can be distinguished from cumulative fertility (636-2).
- Because cross-sectional analysis and hypothetical cohorts were used before genuine cohort analysis, the names of period indices often seem to imply that they refer to a cohort. This usage may lead to apparent contradictions. For example, parity-specific birth probabilities may exceed one for certain years when many postponed births are made up.
⁂
140
The average1 or mean1 most frequently used in demography is the arithmetic average2 or arithmetic mean2 which consists of the sum of a series of quantities divided by their number.. Where the term average or mean is used without further qualification the arithmetic average is generally meant. The geometric mean3 or geometric average3 is sometimes used when all observed values are positive. It is the Nth root of the product of N values. A weighted average4 or weighted mean4 is obtained when different items are given varying importance by multiplying each item by a particular weighting factor5 or weight5. The median6 is the value of the element which divides a set7 of observations into two halves. The mode8 is the most common or frequent value in a set of observations.
- Average, n., can be used as an adjective. Mean, n., can be used as an adjective.
- Weight, n. - weigh, v.
- Median, n., can be used as an adjective.
- Mode, n., modal, adj.
141
The
dispersion1,
scatter1,
variation1 or
variability1 of a set of observations depends on the
differences2 or
deviations2 between its elements. Here the most common
measures of dispersion3 only are mentioned. The
range4 is the difference between the largest and the smallest values of a set of elements. The
interquartile range5 is the difference between the first and the third
quartiles (
142-2) and contains half the observations in the set. The
semi-interquartile range6, also called the
quartile deviation6, which is half the interquartile range, is often taken as a measure of dispersion. The
mean deviation7 or
average deviation7 is the arithmetic mean (
140-2) of the positive values of the deviations of the individual items from the average, the
variance8 is the arithmetic mean of the squares of these deviations and the
standard deviation9 is the square root of the variance.
- The common notation for the standard deviation is σ.
142
If a series of observations is arranged in ascending order, values which have below them a certain proportion of the observations are referred to as
quantiles1 or
order statistics1 .
The median (
140-6) has been previously mentioned. Other important order statistics are the
quartiles2, the
deciles3, and the
percentiles4 or
centiles4, which divide the observations into four, ten and a hundred equal parts respectively.
143
A variable is continuous1 in a given interval when it can take on an infinite number of values between any two points contained in the interval. In the opposite case it is said to be discontinuous2. Where a variable can take only certain isolated values it is called a discrete3 variable.
- Continuous, adj. - continuity, n.
- Discontinuous, adj. - discontinuity, n.
144
The arrangement of members of a population in various categories or classes of a specified attribute or variable produces a frequency distribution1, often called a distribution1 for short. The ratio of the number in the individual group or cell — the absolute frequency2 or class frequency2 — to the total number in all groups is called the relative frequency3 in that group. In demography the terms structure4 and composition4 are often used interchangeably to describe the distribution of characteristics such as age, sex, marital status, occupation, etc. Structure is sometimes used in a more restricted sense to describe the distribution of the population according to age and sex only.
- The term population distribution usually refers to its spatial distribution. However, when used with the name of the characteristic or attribute that is analyzed, the word distribution is a synonym for structure or composition. Thus one finds references to age distribution, age and sex composition, and age and sex structure.
⁂
150
When the movement of a demographic variable in time is considered, a demographic
time series1 is obtained. It is sometimes possible to decompose a time series into a
trend2 around which there are
fluctuations3,
variations3, or
deviations3 (
141-2). Where such fluctuations tend to recur after certain periods, usually several years, they are called
cyclical fluctuations4 or, more generally,
period fluctuations4. In demography the most common period for compiling data is a year, and the fluctuations in sub-periods of a year are called
seasonal fluctuations5. The fluctuations that remain after trend, cyclical, and seasonal fluctuations have been eliminated are called
irregular fluctuations6. They may be due to exceptional factors such as wartime mobilization, or sometimes they are
chance fluctuations7 or
random fluctuations7.
- In a general sense the term variation may be used to describe change in any value or set of values for a variable.
- Periodic, adj. - period, n. - periodicity, n. cyclical, adj. - cycle, n.
- Random, adj.: under the influence of chance (cf. 161-1).
151
It is occasionally desirable to replace a series of figures by another series that shows greater regularity. This process is known as graduation1 or smoothing1, and it generally consists of passing a smooth curve through a number of points in the time series or other series, such as the number of persons distributed by reported age. If a free-hand curve is drawn the process is called graphic graduation2. When analytical mathematical methods are used, this is called curve fitting3. A mathematical curve is fitted to the data, possibly by the method of least squares4, which minimizes the sum of the squares of the differences between the original and the graduated series. Other methods include moving averages5 or involve the use of the calculus of finite differences6. Some of these procedures may be used for interpolation7, the estimation of values of the series at points intermediate between given values, or for extrapolation8, the estimation of values outside of the range for which it was given.
- Graduation, n. - graduate, v. - graduated, adj. Smoothing, n. - smooth, v. - smoothed, adj.
- Interpolation, n. - interpolate, v. - interpolated, adj.
- Extrapolation, n. - extrapolate, v. - extrapolated, adj.
152
It is often necessary to graduate distributions to correct the tendency of people to give their replies in round numbers1. Heaping2 or digit preference2 is particularly frequent in age distributions and reflects a tendency for people to state their ages in numbers ending with 0, 5, or other preferred digits. Age heaping3 is sometimes measured with indices of age preference4. Age data must often be corrected for other forms of age misreporting5 or age reporting bias5.
153
The numerical values of demographic functions are generally listed in
tables1, such as
life tables (
431-1),
fertility tables (
634-1), or
nuptiality tables (
522-1). A distinction is usually made between
calendar-year tables2 or
period tables2 which are based upon observations collected during a limited period of time, and
cohort tables3 or
generation tables3 which deal with the experience of a cohort throughout its lifetime. A
multiple decrement table4 illustrates the simultaneous effects of several non-renewable events, such as the effects of first marriage and death on the single population. The most used are
double decrement tables4.
Forecast tables5★ provide numerical values of demographic functions, like
survival functions (
431-6) for example, which can be used directly for
population forecast (cf.
720-2). When a population is classified in two or more categories according to age, like economic status (women in the labor force or out of the labor force, for example), marital statuses, regions etc. and when continuous flows between categories are possible over time even if the individual state can usually be measured only at discrete times (waves of a longitudinal study, queries to population registers etc.),
increment-decrement methods6★ or
multi-state methods6★ are more and more developed and used.
154
Where insufficient data exist to establish the value of a given variable accurately, attempts may be made to estimate1 this value. The process is called estimation2 and the resulting value an estimate3. Where data are practically non-existent a conjecture4 may sometimes be made to establish the variable’s order of magnitude5 .
155
Methods of
graphic representation1 or
diagrammatic representation1 may be used to illustrate an argument. The data are represented in a
figure2,
graph2,
statistical chart3 or
map3. A schematic representation of the relationships between variables is often called a
diagram4, for example the
Lexis Diagram (cf.
437). A graph in which one co-ordinate axis is graduated logarithmically and the other arithmetically is called a
semi-logarithmic graph5, though such graphs are often inaccurately referred to as
logarithmic graphs5. A
true logarithmic graph6 has both axes graduated logarithmically and is sometimes referred to as a
double logarithmic graph6. A frequency distribution may be represented graphically by
frequency polygons7 obtained by joining points representing class frequencies with straight lines, by a
histogram8, where class frequencies are represented by the area of a rectangle with the class interval as its base, by
bar charts9, in which the class frequencies are proportionate to the length of a bar or by an
ogive10 representing the cumulative frequency distribution.
⁂
160
Sampling procedures1 are used to obtain information about a population from part of the population only, instead of having to study
every person (
110-2). The part of the population studied is called a
sample2. A population is a collection of
elements3 which are the object of the investigation. A
sampling unit4 may be an element or a group of elements of the population and is used for selecting samples. In demographic samples the elements are usually
individuals (
110-2),
families (
115-1), or
households (
110-3) and sampling units may be individuals, households, blocks of houses, municipalities or areas. The sample will consist of a number of sampling units selected in accordance with a
sampling scheme5 or
sampling plan5.
161
A sample whose elements are selected by a chance process is referred to as a random sample1 or probability sample1. If a complete list of sampling units is available, this is called a sampling frame3. In simple random sampling4 a proportion of sampling units is selected from the frame at random2. This proportion is called the sampling fraction5 or sampling ratio5. Systematic samples6 are drawn systematically7 from a frame in which the sampling units are consecutively numbered. The sample is selected by taking the nth, (n + s)th, (n + 2s)th, ..., etc. unit, where n is not larger than s and is selected at random. In cluster sampling8 population elements are not drawn individually, but in groups which are called clusters9 .
- Random, adj. - randomness, n. - randomize, v,
162
In
stratified random sampling1 the population is divided into a number of
strata2 which are in some sense more
homogeneous (
134-4) than the population as a whole with respect to the characteristics studied, and a simple random sample (
161-4) is drawn in each stratum. Variable
sampling fractions (
161-5) may be used in the different strata.
Multi-stage sampling3 is a method where the selection of the sample is carried out in several stages. A sample of
primary units4 is first selected and each of these units is then regarded as a population (
101-3) from which a
sub-sample5 of
secondary units6 is selected, and the process may be repeated. When there is no good sampling frame, a sample of areas delimited on a map may be selected: this procedure is called
area sampling7.
- Stratify, v,: divide into strata (plural of stratum) - stratification, n.
163
In
probability sampling (
161-1), chance methods are used to obtain a
representative sample1 i.e., a sample which is a faithful reflection of the population with respect to all the characteristics under investigation except for random fluctuation. In
quota sampling2, on the other hand, the sample is purposely selected so as to reflect the population in certain characteristics, and each
interviewer (
204-2) is given a
quota3 of different types of sampling units which are to be included in his sample. Within the limits of the quota the interviewer is free to select the sampling units.
164
A population parameter1 is a numerical value that characterizes a population. Statistical estimation2 is the name given to the procedure by which the values of such parameters are estimated from the sample. Such estimates are subject to sampling errors3 and a measure of the magnitude of the sampling error is generally given by the standard error4. Sometimes a confidence interval5 is associated with an estimate to show the limits within which the estimated quantity may be expected to lie with a pre-determined probability. A difference between two values is referred to as a significant difference6 when the probability that it is due to chance is less than a given value which is called the level of significance7. Thus a difference would be significant at the 5 percent level if the probability that it could have arisen by chance is less than 0.05. In addition to sampling errors, observation errors8 or response errors8 also affect estimates. These errors usually include interviewer biases9 which are systematic errors introduced by the interviewers when the basic data are collected.
Chapter 2 • The treatment and processing of population statistics
201
Current population statistics1 may be distinguished from
statistics of population change2. They deal with the static aspects of the subject and give an instantaneous picture of the population at a given moment of time: the
statistical units (
110-1) used are generally
households (
110-3),
individuals (
110-2), etc. Statistics of population change are concerned with the continuous processes of change which affect a population, and deal largely with
vital events3,such as births, marriages, deaths, and with migration (
801-1).
Nonrenewable events4 (e.g. deaths) may be distinguished from
renewable events5 such as pregnancies, births or migratory moves; renewable events are assigned an
order6 based on the number of previous events of the same nature for the same person. Statistics of population change are a principal source for the study of
population processes7, sometimes called
population dynamics7.
Censuses (cf.
202) are the main source of information on the
state of the population8 .
Vital Statistics (
212-1) are the primary source of data for the study of
population growth9 (cf.
701). Occasionally they deal with
natural increase10 only, i.e. they do not take into account movement between the population studied and other populations, but logically
migration statistics (
812-1) are a part of the statistics of population change. The term
population movement11★ is used to refer to the geographical movement of a population.
202
Population censuses1 are taken to obtain information about the
state of the population (
201-8) at a given time. Most commonly all inhabitants of a particular country are counted simultaneously:. the census is then called a
general census2 Occasionally, however, only a section of the population is counted, e.g. the inhabitants of a given area, in which case the census is called a
partial census3. The term "Census", however, denotes that an attempt was made to enumerate every member of the population concerned and to achieve
complete coverage4 of the population. A
micro census5 is limited to a sample of the population, usually large in size, and belongs in the category of
sample surveys6. Censuses or surveys are sometimes preceded by
pre-tests7 or
pilot surveys7. To verify the accuracy and completeness of enumeration (
230-2), a
post-enumeration check8★ is performed using a
post-enumeration survey9.
- Census, n. - censal, adj. The intercensal period is the time elapsing between two successive censuses.
Modern censuses correspond to what used to be called head counts. Population counts included any estimation procedure, however imprecise, based for example on the counting of baptisms (214-2) registered for a number of years, or of hearths (110-3) or even parishes (214-1).
203
An
enumeration1 is any operation which is designed to yield a population total. It differs from a simple
count2 in that a
list3 is generally prepared. An
inquiry4 or
survey4 on the other hand, is generally an operation which is designed to furnish information on a special subject (e.g. the labor force) and which has limited aims. A
field inquiry5 or
field survey5 is an inquiry in which information is obtained by
personal interview6. In
postal inquiries7 or
mailback surveys7 questionnaires (
206-3) are sent out by post with a request to return them completed. A
retrospective survey8 focuses on past demographic events; in a
multiround survey9 those events that occurred since the previous survey are noted from the second round on. This type of survey should not be confused with a
call back10, a term used to describe the instance where the interviewer is obliged to make several attempts to reach a respondent. In censuses, information may be obtained by either
direct interview11, or by
self-enumeration12. In the first method, also called
canvasser method11 the enumerator (
204-2) notes the information provided by or about the respondents; in the second method, also called
householder method12, the questionnaire is completed by the
respondents (
204-1) themselves. Self-enumeration may take the form of a
mail census13.
- Enumeration, n. - enumerate, v.
- Count, n. - count, v.
- List, n. - list, v.
- Survey, n. - survey, v.
204
Persons who answer questions in a
census (
202-1) or a
survey (
203-4) are called
respondents1 or
informants1. Persons who
collect (
130-4) the information are called
interviewers2,
field workers2 or
enumerators2, the last term being usually reserved for persons collecting information in a census. Enumerators usually work under the control of
supervisors3 or
inspectors3.
General censuses (
202-2) are usually taken by the
statistical departments4 of individual countries. in England and Wales it is the [*NoteTerm!!General Register Office*], in Scotland the [*NoteTerm!!General Registry Office*]; both are headed by a [*NoteTerm!!Registrar General*].}
- The term interviewee is sometimes used.
- In the United States of America the office responsible for the census is called the Bureau of the Census;
205
Censuses are usually
compulsory1, i.e.
respondents (
204-1) are under a legal obligation to provide the required information; in this respect they are different from
voluntary inquiries2 (cf.
203-4), where the problem of
non-response3 may become important This is particularly the case in
postal inquiries (
203-7), where it is often necessary to
follow-up4 the first questionnaire by a second, or sometimes by a visit.
Non-respondents5 are frequently divided into those who
refuse6, i.e. who are unwilling to cooperate in the inquiry, and those who could not be found by the
interviewer (
204-2). The latter are counted as
absentees7 or
no contacts7. The
proportion of refusals8 in response to a given question is an useful index of the reactions of the respondents. The replacement of an unusable sample unit with another unit is referred to as
substitution9. j
- Refuse, v. - refusal, n.
- Absentee, n. - absent, v. - absence, n.
206
The forms1 used for the collection of information have a number of different names. The term schedule2 is frequently used, especially the term census schedule2. Most of the forms are questionnaires3, particularly when they are designed for completion4 by the respondents themselves. At other times, officials obtain statements5, or particulars6 which they extract7 from documents primarily used for non-statistical purposes. The questions are usually of two basic types: closed ended questions8 in which a respondent replies by selecting one out of a limited number of responses listed on the questionnaire or open ended questions9 to which the respondent may give a spontaneous answer.
207
A census
schedule (
206-2) may be an
individual schedule1 containing information relating only to a single individual, a
household schedule2 containing information relating to each of the members of the
household (
110-3), or a
collective schedule3,
nominal list3 or
enumerator’s schedule3 on which the
enumerator (
204-2) enters successively data for all the persons he enumerates. There may be special schedules for the
institutional population (
310-7), which are called
institutional schedules4.
⁂
210
Census operations1 usually begin with the delimitation of census areas2 and enumeration districts3. Enumeration districts in towns and cities may consist of one or several blocks4, a block being defined as a group of buildings around which it is possible to walk without crossing a street, or which are bounded by some obstacle, such as a railway line or a river. Most of the larger cities of several countries have been subdivided into statistical areas called census tracts5 which may contain one or several enumeration districts.
211
Vital events1 may be defined as births, deaths, stillbirths, foetal deaths, marriages, adoptions, legitimations, recognitions, annulments, divorces and separations; in short all the events which have to do with an individual’s entrance into or departure from life together with changes in civil status2. Records of these events are generally called vital records3, or registration records3. For legal reasons vital events have, in many countries, long been the object of vital registration4 or civil registration4. Birth registration5, marriage registration7 and death registration9 use special forms as birth records6, marriage records8 and death records10; these are the most common types of registration documents. The person responsible for maintaining these registers is called the registrar11.
- Register, n. - register, v. - registration, n.
Civil registration systems are the descendents of parish registers (214-1) kept by the Church. A register was originally a bound book in which one or several lines were devoted to an event Today individual records often take the form of certificates. They are separate documents for each recorded vital event.
212
Vital statistics1 or registration statistics1 are obtained by processing the registration record or a statistical report2 established at the time of registration. Tabulations by place of residence3 of the mother or of the decedent are often regarded as more useful for demographic purposes than tabulations by place of occurrence.
- In many countries, the time of registration of a birth may be markedly later than the time of occurrence.
213
The
registers mentioned in a preceding paragraph (cf.
211-4) are distinct from the
population registers1 of those countries which possess a system of
continuous registration2. In these registers every member of the population or every family may be represented by a
card3, and the register is
maintained4 or
updated4 through information which reaches it through the local registration offices and through registration of any
changes of residence5 (cf.
310-6). It is usually
matched6 with the census results and brought up to date at regular intervals by special
checks7.
- A card file is a collection of cards. In general, a file is a collection of records arranged in convenient order.
214
Historical demography (
102-1) often uses documents which precede or anticipate the development of
civil registration (
211-4) and
nominal lists (
207-3) from censuses.
Parish registers1 or
parochial registers1 contain information on the religious equivalents of vital events such as
baptisms2,
religious marriages (
503-2), and
burials3. For
chrisoms5,
privately baptized infants4★ who die at home prior to a formal church ceremony, only the burial record is available. Nominal lists contain information either on a portion of the population or more rarely on the whole population. They include the a
status animarum6 which are nominal lists of all parishioners,
lists of communicants7 and
confirmation lists8, as well as administrative and fiscal documents such as
hearth tax lists9,
taxation rolls10 and
military conscription lists11.
215
Data are extracted from parish registers with the help of several types of
forms1 or
slips1 . These include the
baptism slip2,
marriage slip3 and
burial slip4. The names of the
subjects of record5 (i.e. the persons being baptized, buried or getting married) are inscribed on these slips, and information is recorded about the parents and other persons such as the
godfather6, the
godmother7 and the
witnesses8. Other
anonymous statements9★,
nominal rolls10★ and
transcription forms11 are also used for summary extraction of the data, either with or without the names of the subjects.
Family re-constitution (
638-2) makes use of
family reconstitution forms (
638-1). When
genealogies12 reconstitute the descendance of an individual or a family, they are under certain conditions a valuable source of information on the demographic characteristics of the upper classes.
⁂
220
The process of obtaining statistical data from documents not primarily designed for this purpose is called
extraction1. In general, whatever its source, statistical information is subjected to
processing2 which may be
manual3,
mechanical4,
electronic5 or a combination of these modes. Manual processing involves no equipment more complex than the
desk calculator6. Mechanical processing uses
tabulating machines (
224-2) or
punch card (
224-3) machines; electronic processing uses
computers (
132-2*). Regardless of the mode of processing, certain
types of operations7 must be performed including
editing8 of the data,
tabulation (
130-6*) and
calculation (
132-2) and
table preparation9. These operations are made more or less complex depending on the mode of processing which is selected.
- Extraction, n. - extract, v.
- Processing, n. - process, v. The terms to process information, data processing, are used widely.
- Editing, n. - edit, v. In English, the term refers to an operation performed either on the basic document or on the machine - readable data, to correct inconsistencies or eliminate omissions. In French, edition refers to the stage of table preparation.
221
Editing the data usually requires the prior
coding1 of a certain number of entries on the
basic document2. The
coding scheme3 establishes a correspondence between an entry and its translation into numeric or alphabetic codes. The code book collects and describes the coding schemes used with a particular set of basic documents. A coding scheme is usually designed to facilitate later groupings of the data. In contrast, a
classification4 is a mere list of individual codes where each
heading5 is given one or several numbers. After the data have been coded, they constitute a
file (
213-3*) which can be converted to machine readable form. The second stage in the editing consists in the
cleaning6 of the file, through elimination of errors by
validity checks7 and
consistency checks7; these can be internal checks within each
statistical unit (cf.
110-1) or may result from the comparison of different units. After errors have been identified, they may be corrected in the original document or the file by some automatic procedure.
- Code, n. - code, v. - coding, n.
222
The edited data are rarely used directly; they are subjected to
grouping (
130-7) and
tabulation (
130-6*), and this normally leads to a presentation in the form of
statistical tables (
131-4). These may be the outcome of
sorting1, either manual or mechanical, resulting in the reorganization of the elements in a set according to predetermined rules, or more simply of a systematic count of the elements presenting a selected characteristic. The choice of elements or of characteristics may be based on the values of one or several quantitative attributes, or on the
modalities2 of one or several qualitative attributes. Few studies can do without computation, simple or complex, isolated or repetitive, and the
computer (
225-2) now allows calculation that would have been too lengthy by hand. These capabilities have led to the development of techniques of
data analysis3. Deterministic and stochastic
models (cf.
730) often require considerable computations, and so do
simulations (
730-6).
- Sorting, n. - sort, v.
223
The stage of
table preparation (
220-9) aims at making the results of processing conveniently available in the form of
listings1,
numerical tables (
131-4) or
charts (
155-2), all of which are commonly used in
descriptive statistics2. The use of
computer graphing3 and
computer cartography3 permits the mass production of graphical presentation at a preliminary stage.
224
Purely
mechanical processing (
220-4) did not involve the use of
electronic equipment1 which has come to replace the earlier
tabulating machines2 or
unit record machines2 and is much more versatile. In most instances the information is
coded (
221-1*) first, and then transcribed onto
punch cards3 by using a
keypunch4. A
card verifier5 is a device used to check the accuracy of the punching. These two types of unit record machines remain in common use since the punch cards are still a frequent way of entering data into the computer. The use of other types of unit record equipment such as the
card sorter6 and the
tabulator7 has declined. Increasingly, the data are entered directly on
magnetic tapes (cf.
226-4) or
disks (cf.
226-5) without resorting to
punch cards.
- Punch cards or punched cards.
- Keypunch or card punch.
225
Demographic research depends heavily on electronic data processing1 using the computer2. The term hardware3 refers to the physical component, whereas software4 supplies the user5 with ways to have access to the computer. Computer specialists6 include programmers7 who write programs8 conceived by system analysts9.
226
The
hardware (
225-3) components of a
computer (
225-2) include one or several
central processing units1, a
central memory2, one or more
mass storage devices3 which use
magnetic tapes4 or
disks5 and a set of
input-output devices6. The
software (
225-4) components include the
operating system7, which has the task of efficiently managing the available
facilities8 for the
users (
225-5) running the
users’ programs9 and the
processing programs10 which are preestablished
programs (
225-8) designed for the solution of standard problems.
227
A
user (
225-5) can process his problem by writing a
program (
225-8) in a general
programming language1 such as Fortran, Cobol, Basic or Algol, or a specific language, designed to use the
processing programs (
226-9) stored in the
central memory (
226-2) of the computer such as a
data base management system2 used to create and maintain a
data bank2, a
survey processing program3 or a
statistical package4. The devices which are used to enter and receive information from the computer can differ according to the mode of processing. In
batch processing7, the normal input and output units are the
card reader5 and the
line printer6. A
console8 is the normal input and output unit for processing in a
timesharing mode9. In either instance the entry units may be spatially separated from the computer and processing under these conditions is accomplished by
remote terminal10.
- In addition to programming languages as defined above, other types of languages can be used to manipulate the operating system; these are usually referred to as job control language.
228
Any information processed in a
computer (
225-2) undergoes three main phases. First,
data entry1 or
input1 which may be done by using
punched cards (
224-3*) or by using an
on line2 device such as a
keyboard console (
227-8). Data which is already stored in the computer may be accessed from either
central memory (
226-2) or from one of the
mass storage devices (
226-3) and used as
input data. This is part of the
data collection3★ which goes from
extraction (
220-1) to the transcription on an electronic medium, through
validity checks (
221-7) and
consistency checks (
221-18 that can be made during data entry when working on line. The second phase,
processing (
220-2), is divided into two main types:
numerical processing4 and
non-numerical processing5. Statistical or arithmetic computations are normally the operations contained in the former while data manipulation operations are the focus in the latter. In a third phase, occasionally referred to as output phase, the
processed results6 or
output6 may be printed out on the
line printer (
227-6) or saved as a file on a
mass storage device (
226-3) for further processing. Results may also be diverted to a
plotter7 to obtain processed results in the form of a graph or a figure.
⁂
230
The accuracy1 of population statistics will depend among other factors on the completeness2 of the count of individuals, groups or events on which they are based. Omissions3 and undercount3 tend to generate underestimation4 while multiple counting5 leads to over-estimation6. Additional sources of error include misreporting7 of a characteristic such as age and classification errors8. Such inaccuracies are sometimes detected by post-enumeration tests9 or quality checks10. Occasionally certain questions are not answered or insufficiently answered and this may lead to considerable inaccuracy, the incidence of which is indicated by the frequency of the class designated as non-response11, not stated11, unknown11, undeclared11, not specified11, poorly defined11 or misspecified11 etc...
- Accuracy, n. - accurate, adj.
- Completeness, n. - complete, adj. The terms "complete" and "completeness" are used here to express the absence of omissions. The same terms may also be used to refer to coverage, as in 202-4.
- The omission of some events from vital registration is called underregistration, and from a census or survey, underenumeration.
- The expression double counts is often used in this sense.
Chapter 3 • Distribution and classification of the population
301
Population statistics are generally presented in terms of the
geographical distribution of the population1 or the
spatial distribution of the population1, and also by
structure (
144-4). Each population lives in a given
area2 or
territory2 (
305-6), and the study of the
geographical distribution3 or
spatial distribution3 deals with the way in which they are distributed over the territory.
- Territory, n. - territorial, adj.
302
The territory (
301-2) in which a population lives will generally be divided into
sub-areas1. For administrative purposes it may be divided into
administrative areas2,
administrative units2 or
administrative districts2 sometimes known as
legal divisions2 or
political divisions2. Geographers on the other hand, may divide the area into
regions3 or
zones4 which may or may not correspond to administrative units. The term "region" or "zone" may be used in a number of different senses and the areas referred to may be of very different sizes. Thus one speaks of the polar regions, of climatic zones or of metropolitan regions. The terms
natural region5 and
economic region6 are used by geographers. The term
natural area7 is used in
human ecology (
104-5) to define an area occupied by a population with distinct characteristics.
303
Administrative units differ from country to country and over time in the same country, so that the same word may cover different situations. Minor civil divisions include townships1 and parishes1; major civil divisions receive names such as states2 or provinces2, and intermediary units are often called counties5 and districts6. In Canada, for example the main administrative divisions, by increasing order of size, are the township8, the county9 and the province10. As an other example, the main administrative division in France are now the regions2 which correspond to the province and the departements 3★ which correspond to the cantons4★ in Switzerland where districts7★ and circles11★ are minor civil divisions. In the United States, parishes are equivalent to counties.
- Villages, boroughs and cities are other names sometimes given to the smaller administrative units. Municipality is a general descriptive term for minor civil division.
304
A population may be settled1, sedentary1, or nomadic2, i.e., migrating back and forth within a given area and without fixed abode. Nomads who are in the process of becoming settled are called semi-nomadic3. Occasionally primitive peoples may have a territory allocated exclusively to themselves called a native reserve4 or reservation4.
- Nomadic, adj.- nomad, n.
305
A
country1 is usually the territory (
301-2) of a
people2 (cf.
333-3) or a
nation2. Persons belonging to a nation share, in general, a common culture. A
state3 is a political body. The term may be used in two different senses: most commonly a state is a body possessing full sovereignty in its territory and over its inhabitants. However, a number of
federations4 of
federal states4 are divided into smaller units which are also called
states5 and whose sovereignty is not absolute (e.g. in the United States of America and Australia). The term
territory6 (
301-2) is generally used for a geographical area, but it is occasionally used to denote a political unit which has been settled relatively recently. A distinction is sometimes made between
self-governing territories7 and
non-self-governing territories8.
- Nation, n. - national, adj.
306
Within a
territory (
301-2), certain terms are used to describe different kinds of
conglomerations1 or
aggregations1 of population, sometimes known as
population aggregates1,
population clusters1 or more generally as
localities1. In rural areas, the smallest unit is referred to as a
hamlet2, which generally consists of a very small collection of houses. A slightly larger conglomeration is the
village3 which is generally a small community and which may have a mainly agricultural population. A
town4 or
city4 is a larger conglomeration in which there are in general few people engaged in agriculture, but the point at which the transition from village to town or city occurs is difficult to specify and varies in different countries. The seat of government of a
territory (in the sense of
305-1), is called its
capital5. In a county, the place where the local government is situated is called the
county town6 or
county seat6. Towns and cities may be further divided into
districts7 or
quarters7 and for electoral purposes into
wards7.
- The term agglomeration is also used in this sense. See however 307-1.
- A very large town or city is sometimes called a metropolis, n. - metropolitan, adj.
Town, n. - urban, adj.
307
Continuously built-up areas may arise through the coalescence of neighboring localities which, while retaining their administrative independence, may constitute one agglomeration1, containing a central city2 and suburbs3 with specialized functions. The terms conurbation4 or metropolitan area4 are generally employed to designate a number of different agglomerations which, though geographically contiguous, have retained their own individuality. In many cases, however, the term conurbation is used as a synonym for agglomeration. The fusion of conurbations and large cities leads to the megalopolis5 or metropolitan belt5 which may extend over a large area. Metropolitan regions6★ may refer to agglomerations which include the commuter belt.
- Another term used as synonym is urban nucleus.
- Other terms used as frequent synonyms are satellite communities and suburban zone.
Suburb, n. - suburban, adj. - suburbanization, n.: the process of rapid population growth in the suburban zones adjacent to a large city. Densely populated areas contiguous to large cities are occasionally referred to as the urban fringe, and the zone marking the transition between urban and rural settlement, as the rural-urban fringe or exurbia.
- Urban populations are often regrouped in statistical areas such as the standard metropolitan statistical area (United States), the densely inhabited district (Japan) or the conurbation (England).
⁂
310
In census practice a distinction is made between the
resident population1 or
de jure population1 of a given area, which consists of the people who habitually live in that area, and the
actual population2, or
de facto population2, which is made up of the persons in the area on census day. In the resident population,
temporary absentees4 are included with those
permanent residents3 who are present in the area on census day; the actual population consists of residents together with
visitors5 or
transients5. The two methods of enumeration will give different results even for the country as a whole. The place where a person lives is called the
place of residence6. For administrative reasons, certain persons who live together in large communities (i.e. boarding schools, military persons in barracks, prisoners, etc. (cf.
110-5*) are often separately enumerated. These persons form the
institutional population7. Special rules are used to enumerate
vagrants8 or
persons of no fixed abode8.
- The term domicile is a technical legal term for legal residence and denotes the place where a person is legally deemed to reside. This may differ from his actual residence. In the United States of America, the de jure population is the population of usual residence.
- In the United States of America the term institutional inmates is reserved for persons living under care or custody in correctional institutions, hospitals for mental disease and tuberculosis, homes for the aged, handicapped and dependent or neglected persons; other residents of group quarters include such persons as students in college dormitories, or soldiers in military barracks.
311
In many countries a
rural area1 is defined as an administrative district in which the population size is below a certain level (often taken as 2,
000). Other areas are called
urban areas2. The
rural population3 is the population living in rural areas, the
urban population4 that living in urban areas. Criteria for allocating the population of particular areas to the rural or urban sector respectively differ in different countries. Certain definitions of rural and urban population may lead to distinguish an intermediate category referred to as the
semi-urban population5.
- Rural, adj. - realization, n.: growth in the proportion of persons living in rural areas.
Rural population should not be confused with agricultural population or farm population (359-2).
- Urban, adj. - urbanization, n.: growth in the proportion of persons living in urban areas.
312
The density of population1 or population density1 is an index showing the relation between a population and the area in which it lives. The simplest density index2 is obtained by dividing the total population by the area of the territory and is generally expressed as the number of persons per acre, square kilometre or square mile. The scatter of the population3 depends on the type of settlement4, grouped settlement5 or dispersed settlement6. Some writers have computed the population center7 of a given area by the methods used to find the center of gravity in applied mathematics; each individual in the population is given an equal weight.
- Density, n. - dense, adj.
313
Where the pattern of settlement of different populations is to be compared and other factors besides surface area are taken into account, comparative density indices1 are sometimes computed. There are various such indices, among which we may mention the density of population per unit of cultivable area2 and the density of the agricultural population per unit of cultivable area3. Occasionally these indices are based on the cultivated area4 rather than the cultivable area5. The density may also be expressed as a relation between population and total economic resources; the maximum potential density6 or population carrying capacity6, showing the relationship between resources and the maximum population that can be supported with these resources, may be considered. The concept of optimum density7, i.e., the density which will give the maximum real income per head with given resources, is used in population theory.
⁂
320
The
sex structure1 or
sex distribution1 of the
population is measured by the ratio of the total number of one
sex2 to the total number of the population or, more frequently, to the total number of the other sex. By convention, the male sex is usually considered in the numerator and we speak of the
masculinity3 of the population. The
masculinity proportion4 is the proportion of males in the total population. The
sex ratio5 is the ratio of the number of males to the number of females; it is usually expressed as an
index value (
132-7) i.e. the number of males per
100 females.
- Occasionally, the numerator of this ratio relates to the female population, and the feminity of the population is measured.
321
The terms
males1 and
females2 are commonly used in demography in place of
men1 and
women2 to refer to persons of each sex at all ages including
children (
323-3). In a similar fashion the terms
male child3 and
female child4 replace
boy3 and
girl4. The term man is also used in the general sense of
human being5★.
322
Age1 is another fundamental characteristic of population structure. Generally it is expressed in years, or years and months; in the case of very small children, it may be given in months and days, or in years and decimal fractions of years. Demographers usually truncate the age to the number of complete years2 lived, and this is called age at last birthday3. Occasionally demographic statistics refer to the age reached during the year4. Where the fraction of the last complete year lived is counted as a whole year, as in some actuarial applications, we speak of age at next birthday5. Stated age6 or reported age6, in a census or vital registration, is often rounded upward to the next integer especially when the next birthday is near. The term exact age7 is used, particularly in life table calculations, to denote the time when an individual reaches his birthday. Census questions include either the date of birth, age at last birthday, or even simply age without further precision. When the knowledge of ages is not widespread, a historical calendar8 may be used to estimate ages. This is a list of events with a known date that occurred during the lifetime of the respondents.
- Thus, age groups (325-2) are usually expressed in completed years and the group aged 6-13 years includes the individuals whose exact ages (322-7) are comprised between 6 and 14 years.
323
In demography, certain terms which have been taken from everyday language are used to denote different
stages of life1 or an approximate range of years. At the beginning of life comes
childhood2. In general a
child3 is a person who has not yet attained puberty (
620-2). In the very early days of life, the child is called
newborn4. A
child at the breast5★ is a child who has not yet been weaned from its mother. The term
infant6 may be used to denote a child who has not reached its first birthday, though in colloquial language it may be applied to slightly older children. Children who have not yet reached the compulsory school age are called
pre-school children7, a
school-age child8 is a child at an age at which it is customary to attend school.
- Infant, n. - infancy, n.: the period of being an infant - infantile, adj.
324
Childhood is followed by
adolescence1 or
youth1 which starts at
puberty <
620-2). The terms
adolescents2 or
young persons3 are employed for men and women between childhood and
adult age4. Those who have reached
maturity4 are called
adults5.
Old age6 is frequently used to define the period of life during which most persons are retired. Persons above that
retirement age7★ are called
old people8,
the aged8 or
the elderly8.
- The term youth is also employed collectively. When used in the singular, it more frequently refers to a male. In the United States of America, teenager refers to persons in their teens, i.e., between 13 and 19 years.
- Maturity, n. - mature, adj. - maturation, n.: the process of growing to maturity.
325
The age distribution of a population is either given by
individual years of age1 or by
age groups2, which may be
five-year age groups3, also called
quinquennial age groups3, or
broad age groups4, such as 0-19 years, 20-59 years, 60 years and over. Occasionally a population’s
age distribution6 or
age structure6 is given by classifying the population by
year of birth5. Graphically an age distribution may be represented by a
population pyramid7 which is a
histogram (
155-8) showing the population by age and sex and so named because of its pyramidal shape.
326
The
mean age1 of a population is the average age of all its members, the
median age2 is the age which divides the population into two numerically equal groups. When the proportion of old people in a population increases, we speak of the
aging3 of the population. An increase in the proportion of young people involves a
rejuvenation4 of the population. An
old population5 has a high proportion of old people, a
young population6 has a high proportion of young people or children. The term aging used above should not be confused with the technique used in population projection, which consists of
aging7 a population by applying
survival probabilities (
431-6) by age to determine the number of survivors at a later date.
- Also written ageing.
- The word younging is used by American demographers.
327
Aging (
326-3) of a population must also be distinguished from
individual aging1 or
senescence1, and from an increase in the duration of human life or
increased longevity2 which is the result of improved standards of living and of medical progress. An individual’s
physiological age3 will depend on the state of his tissues and organs. In the case of children we speak of
mental age4, which is defined as the age at which the attainments of the individual child as measured by certain tests can be performed by the average child. In studies of mental and physiological age, a distinction is made between these ages and chronological age measured by the time elapsed since the individual’s
date of birth5. The ratio of mental to chronological age is called the
intelligence quotient6 (often abbreviated to I.Q.).
- Senescence, n. - senescent, adj.
⁂
330
Inhabitants of a nation or state may be subjects1 citizens1 or nationals1 of that state, who enjoy certain political rights, or they may be aliens2 or foreigners2 who are citizens of another state, or citizens of no state at all and called stateless3. The term “subject” used to have a servile connotation but has tended to lose it and is frequently taken as a synonym of citizen, though occasionally a distinction is made between a subject and a citizen. Citizens of a state generally possess the nationality4 of that state. This term is nowadays used as a synonym for citizenship4, but in some multi-national states6 a distinction may be drawn between political nationality4 and ethnic nationality5.
331
Aliens may acquire the nationality of their country of residence by naturalization1 and become naturalized citizens2 of naturalized persons2. In some countries certificates of naturalization3 may be revoked4 and naturalized persons will then suffer loss of nationality5. Persons may occasionally have more than one nationality, and will then be said to possess dual nationality6. A distinction is sometimes drawn between resident aliens7, who habitually live in a country other than their own, and alien visitors8 or visiting aliens8, who are there only for relatively short periods.
332
Individuals born in the territory in which they live are called natives1 of that territory. If their ancestors were among the original inhabitants of that territory, they are called autochthonous2, indigenous2 or aboriginal2 inhabitants; the last term is often reserved for primitive peoples. Statistics frequently distinguish between native-3 and foreign-born4 individuals.
- Aboriginal, adj. - aborigines, n., pl.
333
The term
race1 is generally taken to mean a group of persons with certain common physical characteristics which are hereditarily transmitted. In some census practice, the term is sometimes used more loosely, sometimes for a group of people bound together by a common culture or national origin, or even for people inhabiting a given territory. Another term which is sometimes used is
ethnic group2 and here again there is no uniformity in meaning. Ethnic group generally refers to a group of people with common culture, language, or religious traditions. An ethnic group may be a racial group. A
people3 (cf.
305-2) is generally a collection of persons who are linked by a common past or a common culture. Persons living is a given territory who exhibit notable difference from the majority of the population are called
minorities4, e.g.,
ethnic minorities4,
national minorities4,
linguistic minorities4, or
religious minorities4.
- Race, n. - racial, adj.
- Racism, n.: theory that certain races are inherently superior to others; racist, adj.
- Tribe, and tribal group, still used in certain contexts, tend to be replaced by "ethnic group".
334
Individuals are sometimes distinguished by their color1, which is used loosely to refer to the apparent pigmentation of the skin. In some countries a distinction is drawn between white persons2 and colored persons3 sometimes called non-whites3. Mating between persons of different colors is sometimes referred to as miscegenation4. A person who is the issue of such a union is said to be of mixed blood5 or mixed parentage5.
- Crossing is sometimes used in that sense. It also refers to the change in racial self-identification of an individual between one date and another.
- The issue of a white and a negro is called mulatto. In Spanish America the issue of a person of European extraction and an American Indian is called a mestizo. The issue of a person of European extraction and an Asian is sometimes referred to as an eurasian.
⁂
340
The population may be classified by the language1 or dialect2 habitually spoken. A distinction is drawn between an individual’s mother language3 or mother tongue3 which is the language spoken in his home in his earliest childhood, and his usual language4, which is the language customarily used by him. The distinction between the two is not always very easy among people who are bilingual5 or multilingual5. The statistics that present information on these topics are called statistics of language6.
- Language, n. - linguistic, adj.
Linguistics, n.: the study of the nature, structure, origin and meaning of language and human speech.
- Dialect, n. - dialectal, adj. A dialect is a variety of language that is distinguished by its pattern of pronunciation, grammar or vocabulary.
- Bilingual, adj. - bilingualism, n.
341
Religious statistics1 divide the population by religious affiliation. A distinction is generally drawn between the major religions2 and their principal denominations3, rites4 or sects5. Persons who have no religion may describe themselves as agnostics6, freethinkers6 or atheists6.
- Rite, n. may also be used in the sense of a religious ceremony.
342
The population is also often classified by educational status1. Individuals who can read and write are called literate2; those who have reached a certain age and cannot are illiterate3. Often completion of a particular grade or level of schooling is assumed to confer literacy. Educational attainment statistics4 classify individuals by grade attainment5, years of school completed5 or, more rarely, by age at leaving school6. Another type of classification is based upon the diploma7, degree7 or certificate7 obtained, and depends on the organization of instruction8 in each country.
- Literate, adj. - literacy, n. Literacy statistics are the part of education statistics that refer to the ability to read and write. The literacy ratio is the proportion of the population covered that is literate. Its complement is the illiteracy ratio.
- Illiterate, adj. - illiteracy, n. A person who is able to read but not write may be called semi-literate, and such persons are sometimes classed with the literate and at other times with the illiterate population.
- The school-age population (346-7) is often classifed by grade or level of enrollment, and attainment is then presented only for the population beyond normal school age.
343
The education system1 includes all institutions, public and private providing instruction in a country. Where both types exist a distinction is made between public education2 and private education3. After pre-school education4, it is usual to distinguish between three levels of education5 which are in ascending order: primary education6, secondary education7, itself often divided into several cycles8 or tracks8, and higher education9. The latter includes, among others and at different levels10★, courses of study that lead to a university degree11. Technical education12 or vocational education12 may be offered either at the secondary or higher education level.
344
Types of
educational institutions1 and their names are a function of each country’s particular educational system.
Pre-school education (
343-4) is offered in
nursery schools2 or
kindergartens2. The institutions that offer the three
levels of education mentioned above (
343-5) are usually called respectively:
primary schools3 or
elementary schools3,
secondary schools4 and
colleges5 or
universities5; in addition to the latter, there may be various kinds of
professional schools6.
Technical education (
343-12) is given in
learning centers7★,
technical schools8★,
technical colleges9★,
technical institutes10★ and
educational institutes11★.
- The term college is used in a variety of senses; a university college is either an institution of higher learning which has not full university status, or it may be a constituent college of a university.
345
A
class1 (cf.
130-8) is a group of
pupils2 with the same
teacher3 who meet in the same
class-room4 and are generally instructed simultaneously. A group of pupils who are at the same level of educational advancement are said to be in the same
grade5 in the United States of America, or in the same
class5 or
form5 (cf.
206-1), in Great Britain. The term
student6 is generally used for those receiving higher education, but is also interchangeable with “pupil” at the secondary level.
- A scholar in Britain is generally a pupil or student who has been given a scholarship from public or private funds; the use of the term as a synonym for pupil is archaic. In the United States of America such a student would be called a scholarship holder or scholarship student.
- A university student who has not yet taken his first degree is an undergraduate. A graduate (cf. 151-1*) in Great Britain is the holder of a university degree; in the United States of America the term may be used for anyone completing his studies at the university, high school, or even primary school. In the U.S., a graduate student is one who is pursuing a second degree, the equivalent of a post-graduate student in the British system.
346
Current school statistics1 may distinguish between the number of pupils enrolled2 and the number of pupils in attendance3. A comparison of these two figures gives an attendance ratio4. Compulsory education5 implies the existence of a range of ages where school attendance is obligatory by law. This makes it possible to specify the number of children of school age6 or the school-age population7 according to a legal criterion.
- The attendance ratio is the ratio of pupils in attendance to pupils enrolled, whereas the enrollment ratio is that of pupils enrolled to the school-age population.
347
Other statistics concern educational progression. An individual progresses normally grade by grade, from the lowest class of elementary school, to the end of his studies. Leaving school1, where compulsory education is enforced, is exceptional during school age, barring illness or death. The dropout rate2 is the probability of leaving school before obtaining a degree, either during the year or at the end of a grade, and it is constructed in the same way as a probability of dying in a life table; its complement to one is the retention rate3. Such rates can be used to compute a table of school life4, from which it is possible to infer the mean length of education5. At the end of the school year, pupils or students who do not terminate their studies, may either repeat the grade or move on to the next grade, with or without change of track6. According to the fate of these pupils or students at the end of the academic year, proportion repeating a school year7★ are established.
⁂
350
A distinction is generally made between the
working population1 or
economically active population1 and the
unoccupied population2 or
economically inactive population2. Generally speaking, the working population consists of those individuals engaged in
gainful activities3. A gainful activity, or
economic activity3, is an activity which contributes to the production of income.
Unpaid family workers (
353-5) are usually included in the economically active population.
Homemakers4 or
housewives4 engaged in unpaid domestic duties, students, retired workers, etc. are usually excluded. The members of the economically inactive population are sometimes referred to as
dependents5 (
358-1) in the sense that they subsist on the product of the working population. (See, however, the different sense of this term stated in §
358). The ratio of the working population to the total population, usually computed with reference to a given sex-age group or other category, is called the
activity ratio6 or
labor force participation ratio6.
- The terms gainfully occupied population, gainful workers, labor force are used as synonyms for working population and economically active population.
For statistical measurement of the working population, the gainful worker concept or the labor force concept may be used. According to the gainful worker concept, the working population is defined as being composed of those persons who have a gainful activity which they normally exercise. According to the labor force concept, it is defined as the group of persons who were working at a gainful occupation or wanting or seeking such work during a specified period preceding the inquiry.
351
Workers1 who make up the working population can be classified as
employed2 or
unemployed3. Under the
labor force concept (
350-1 *), only persons who were actively
seeking work4 or are on temporary layoff during the specified period are usually counted as unemployed. It is important to distinguish between persons who have never had a job and
persons who are looking for their first job11★ or
first-time job seekers11★. The
employed population5 consists of all those currently working for pay or profit. Among the economically active, a substantial portion of workers may be compelled by the economic conditions of the country or of the time, to perform less work than they would normally be able and willing to perform; in this instance, the terms
underemployment6 or
partial employment6 are used.
Marginal workers7 who only very occasionally participate in economic activity, are most often classified as not in the labor force under the
gainful worker concept (
350-1 *). The
employment to population ratio8★ is the proportion of employed persons in the working age group (usually 15 to 64).
Inactive persons9★ are those who do not accomplish any kind of professional activity neither are looking for any employment.
Hidden unemployment10★ or
labor reserve10★ includes people who, although not officially registered as unemployed, are looking for a private work as well as those who do not exercise nor are looking for a job but if some job opportunities arose to them, could respond.
- Employed, n. and adj. - employment, n.: situation of an individual exercising an economic activity. Employment status refers to the classification as either employed or unemployed.
- Unemployed, n. and adj. - unemployment, n.
- One refers occasionally to underutilization of the labor force. Under-employment and underutilization also sometimes refer to the situation of persons who perform below their level of qualification.
352
The
occupational classification1 of the working population (
350-1) shows its members grouped by
occupation2. The similarity of the work done by workers, including the similarity of skills and training required are the main criteria used for grouping occupations into
occupational groups3 or
occupational classes3.
- For purposes of comparability, the International Labour Office has prepared an International Standard Classification of Occupations.
353
The working population (
350-1) is also usually classified by
work status1. In this classification
employers2 are distinguished from
employees3 on the one hand and from
workers on own account4 or
independent workers4 on the other. The latter do not employ labor for pay, but they, as well as employers, may be assisted by unpaid
family workers5 or
family helpers5 who are usually distinguished as a separate group. A combination of occupational and status classifications may be used to construct
social status categories6.
- The classification by status (as employer, employee, etc.) is designated by many different terms in the censuses of various countries, including “industrial status”, “states in employment”, “position in industry”, “class of worker”, etc.
- Managers are sometimes counted with employers though they are themselves employed.
354
Various sub-groups of the category of employees (
353-3) are sometimes distinguished. One such sub-group is
home workers1 or
cottage workers1, who work in their own homes, sometimes for several employers. Among the employees a distinction is sometimes made between
manual workers2 and
non-manual workers3 or
clerical and office workers3. Manual workers may be further sub-divided according to their
skill4, with
skilled workers5,
semi-skilled workers6, and
unskilled workers7 being distinguished.
Apprentices8 are sometimes shown as a sub-category of employees.
- Another type of classification of employees is that which distinguishes between wage earners who are paid daily or weekly and salaried employees who are paid monthly or at even less frequent intervals. The statistics of the United States distinguish four broad occupational categories: white collar workers; blue collar workers, including craftsmen, operatives and non-farm laborers; service workers; and farm workers (cf. 356).
- A laborer is an unskilled worker, who does very heavy physical work.
355
Among the employees (
353-3) a distinction is often made between the
managerial staff1, who make policy decisions; the
executive staff2 who apply the decisions; and
supervisors3 or
foremen3 who direct the operative. Officials () are divided into
simple or lower service4★, mainly for positions of menial work(eg, administrative assistants, technical assistants),
middle service5★, mainly for positions requiring roughly the equivalent of a completed apprenticeship (eg, editors, administrative secretaries),
upper service6★, mainly for positions requiring a Bachelor’s degree or its equivalent (administrative frameworks or technical) and
senior service7★, restricted to graduates holding a Master’s degree or its equivalent.
- The term executive in the United States of America refers to a member of the managerial staff.
356
Special classifications apply in agriculture. Farmers1 or farm operators1 are those who farm the land for profit; among them we distinguish between farm-owners2, who own their land, tenant farmers3, who rent it from a landlord, and share-croppers3, who give a portion of the crop in return for the use of land and livestock. Agricultural laborers4 are persons working who are employed by farmers.
- A farm manager who is salaried is generally classed as a farmer.
- In Scotland a small farmer is sometimes called a crofter. A farmer with a very small farm is also known as a smallholder.
- Agricultural laborers are of three general types: fulltime agricultural laborers, day agricultural laborers, and seasonal agricultural laborers. This last category often consists of migrant laborers.
357
The working population may also be classified by industry1 or branch of economic activity1. This classification depends on the nature of the firm2 or establishment2 that the individual works for. Generally importance is attached to the division of the population into agricultural workers3 and non-agricultural workers4. Government employees5 are sometimes, and military personnel6 or members of the armed forces6 are generally shown separately, but employees of public enterprises are counted as a rule with the rest of the industrial population. Industries are generally classified in three sectors, the primary sector7 (agriculture, hunting, fishing and mining), the secondary sector8 (manufacturing, construction and utilities), and the tertiary sector9 (commerce, finance, transport industries, and service industries). In developing countries the traditional sector10 is often listed separately and opposed to the modern sector of the economy.
- For purposes of international comparability, the United Nations have prepared an International Standard Industrial Classification of All Economic Activities.
- A civil servant is an employee (353-3) of the central government. An official is an employee of a public body but the term is occasionally used for salaried employees of large companies. A distinction is often drawn between government employees and private workers.
358
The economically inactive population may be divided into
dependents1 (
350-5) and
self-supporting persons2. Dependents depend for their support on the efforts of
earners3 or
breadwinners3; this is for example the case of
housewives (
350-4) and
dependent children4. Self-supporting persons have sufficient means for their subsistence. They may be
rentiers5 or
persons of independent means5,
retired persons6 or
pensioners6. A special category of dependents is that of
persons receiving public assistance7 or
public welfare recipients7. Persons incapable of work are called
unemployable8. The ratio of the inactive to the active population is called the
economic dependency ratio9.
- Dependent or dependant, n. - dependent, adj. - dependency or dependancy, n.: the state of being dependent.
- The ratio of the young and the elderly to the adult population is called the age dependency ratio.
359
It is possible to classify the population by the sector of economic activity from which they derive their livelihood, dependants being put into the same category as their breadwinners. We speak of the population dependent on1 a particular branch of activity and in particular of the population dependent on agriculture2. The term agricultural population2 is sometimes used as a synonym, but may also be employed in the sense of farm population2 which lives on farms or is dependent on agriculture and which is distinguished from the non-farm population3 or non-agricultural population3.
360
The infirm1 or handicapped1 are often separately shown in censuses. They are classified according to the nature of their infirmity2 or handicap2. Physical infirmities3 or physical handicaps3 such as blindness, or deaf-mutism are generally distinguished from mental infirmities4 or mental handicaps4, such as feeblemindedness or dementia.
361
The study of the working life1 of individuals includes the study of the accession to the labor force2 and of the separation from the labor force3. At accession it is possible to distinguish those who have never been active, from those who belonged to the labor force at an earlier date; separations may be listed by cause, e.g. death, retirement4, temporary withdrawal. The analysis may proceed by cohort or period, and it involves rates of accession to the labor force5, or probabilities of accession to the labor force6, rates of separation from the labor force7 or probabilities of separation from the labor force8, eventually by cause; these indices are computed by age or age-group.
362
These indices serve to compute tables of working life1, by period or cohort. In addition to the probabilities described in the previous paragraph, these tables contain the distributions by age at accession to the labor force2 and by age at separation from the labor force3, (eventually by cause, before and after accounting for mortality), the mean age at accession to the labor force4 and the mean age at separation from the labor force5. The expectation of working life6, the gross expectation of working life7 (which excludes the effect of mortality) and the net expectation of working life8 (which includes it) all represent the mean number of years of working life that remain to be lived at each age by the active population. For those entering the labor force at that age, this expectation constitutes the mean duration of working life9; a similar index can be computed for all ages at accession taken together.
- Such tables are computed when temporary withdrawals from the labor force are a negligible proportion of the total, and this condition is approximately realized for males. For females, it is necessary to distinguish first accession to the labor force, or entry into the labor force, from re-entry into the labor force.
Chapter 4 • Mortality and morbidity
401
The study of
mortality1 deals with the effect of death on the population. The general terms
mortality rate2 or
death rate2 encompass all the
rates (
133-4) which measure the frequency of
deaths3. Where the expression death rate is used without any qualifying adjective the
crude death rate4 is usually meant (cf.
136-8 for a general discussion of
crude rates). This is generally an annual rate and consists of the ratio of the annual number of deaths occurring during a calendar year to the number exposed to the risk of dying during the same period. This number is equivalent to the
mean population5 or
average population5 for the period, and the population at the mid-point of the period can usually be substituted for the average population without appreciable error, if the size of the population is changing fairly uniformly. If the mortality of a
sub-population (
101-6) only is studied, we speak of
specific death rates (
134-6) among which
sex-age-specific death rates6 are the most common.
Age specific death rates7 without distinction of sex are also used on occasion.
- Occasionally the term mortality is used as a synonym for mortality rate or death rate.
- Death, n. - die, v. - dead, adj. syn. - deceased, adj. or n.
- When the observation period exceeds one year, the mean population is generally obtained as the average of several estimates of the size of the population for each year. The average number of persons years (135-6) is also used as denominator.
402
Specific death rates may be used to study differential mortality1 or mortality differences1 between groups, and reference is made to an excess mortality2 of one group as compared with another, or with the rest of the population. It is measured by an excess mortality index3★. The study of differences in the death rates of specific occupations is called the study of occupational mortality4. In a rather different sense the term occupational mortality5 may refer to the mortality from hazards associated with a particular occupation. Among these, we may mention occupational diseases6.
- Differentials in mortality is also encountered.
- The expression excess male mortality implies a comparison with the corresponding female mortality, e.g. at the same age.
403
Crude death rates (
401-4) will depend upon the structure [particularly the
age structure (
325-6)] of the population as well as on the level of mortality. If the mortality of different populations is to be compared
standardized mortality rates1 or
adjusted mortality rates1 are sometimes computed to eliminate the effect of differences in
population structure (
144-4). Age is the characteristic for which mortality rates are adjusted most frequently by reference to a
standard population2 with a given structure. If
specific rates (
134-6) for the population studied are available, it is possible to use the
direct method of standardization3 which consists of applying these rates to the corresponding groups of the standard population. If specific rates are not available, it is still possible to obtain standardized mortality rates by the
indirect method of standardization4. More frequently,
comparative mortality indices5 are computed by applying
standard mortality rates6 to the different groups of the population studied and summing these to obtain an expected number of deaths; the indices are then obtained by comparing the
observed deaths7 in the population with the
expected deaths8 which would have occurred had the standard rates applied.
- Standardize, v. - standardized, adj. - standardization, n.: the process of standardizing.
- If a crude death rate (401-4) is multiplied by a comparative mortality index, we obtain an indirectly standardized death rate. In British official terminology, when occupational mortality is studied, the figure obtained by direct standardization is called a comparative mortality figure and that obtained by indirect standardization a standardized mortality ratio.
⁂
410
The mortality of live-born children who have not yet reached their first birthday is called infant mortality1. The mortality of live-born children who die before reaching a certain age taken as four weeks or 28 days, the so-called neo-natal period3, is called neo-natal mortality2. The mortality during the first week of life and between the first week until before 28 days are called respectively early neo-natal mortality4 and late neo-natal mortality6★. The term post-neonatal mortality5 refers to deaths after the neo-natal period, but before reaching the age of one year.
- In certain statistics the neo-natal period is defined as the first month of life. The term early infancy is occasionally used as an approximate equivalent to the neo-natal period, as, e.g., in "diseases of early infancy."
411
The expression
foetal mortality1 is used for deaths prior to the complete expulsion or extraction from its mother of a
product of conception (
602-6) irrespective of the
duration of pregnancy (
603-3). The terms
intra-uterine mortality1 or
mortality in utero1 may also be used. The corresponding deaths are called
foetal deaths2 or
intra-uterine deaths2.
Early foetal mortality3 occurs before the twentieth week of gestational life, while
intermediate foetal mortality4 occurs between the twentieth and the 28th week of gestation. After the twenty-eighth week, one refers to
late foetal mortality5 and the product is called a
late foetal death5 or, popularly, a
stillbirth5.
Perinatal mortality6 includes late foetal mortality and a portion of infant mortality that may include either early neo-natal deaths, or all neo-natal deaths. The
foeto-infant mortality7★ includes stillbirths and deaths of children under one year.
- Foetal - also spelled fetal.
- Also designated as pregnancy wastage. These terms include abortions (603-5), miscarriages (604-1) and stillbirths.
- Early foetal deaths are also popularly known as miscarriages.
- Stillbirth, n. - stillborn, adj. In certain countries, including France, children born alive who died before registration may be legally included among the stillborn, and are called false stillbirths.
- The corresponding deaths are called perinatal deaths.
412
The ratios of deaths under one year of age1, of deaths of less than 28 days, and of deaths of less than one week, occurring in a year, to the number of live births of the same year give respectively the infant mortality rate2, the neo-natal mortality rate3 and the early neo-natal mortality rate4. These rates are generally expressed per one thousand live births. When deaths are cross-classified by age and year of birth, it is possible to divide the deaths under one year by the births in the two cohorts to which they belong. The resulting index is an adjusted infant mortality rate5 equivalent to a probability of dying before age one5. In the absence of such information separation factors6 may be estimated, which divide infant deaths into those occurring to infants born in the current calendar year and to infants born in the previous calendar year.
413
The proportion of
late foetal deaths (
411-5) among all births is called a
late foetal mortality rate1. The ratio of late foetal deaths to
live births (
601-4) is called a
late foetal mortality ratio2. A
foetal mortality rate3 represents the number of known intra-uterine deaths per one thousand births in the same year while the
foetal mortality ratio4 is the ratio of intra-uterine deaths to live births in a given year. These indices greatly understate intra-uterine mortality since early intra-uterine deaths frequently remain unobserved or unknown. A better measurement of intra-uterine mortality is provided by
intra-uterine mortality tables5, a specialized application of the
life table (cf.
432) which takes into account the duration of gestation. The
perinatal mortality rate6 relates
perinatal deaths (
411-6*) to the sum of late foetal deaths and live births. The
foeto-infant death rate7★ represents the number of known stillbirths and deaths in the first year of life per one thousand live births and stillbirths of the same reporting period.
- Also called stillbirth rate. This usage is not recommended.
- Also called stillbirth ratio. This usage is not recommended.
- The perinatal mortality ratio relates perinatal deaths to live births only.
414
In the study of
age-specific mortality1, the terms
infant mortality (
410-2) and
neo-natal mortality (
410-3) refer to generally accepted time periods. The usage of such terms as
child mortality2,
youth mortality3★,
adult mortality4 or
mortality of old age5 is not uniform.
Post-infantile child death rate6 sometimes refers to the death rate between one and 4 years of age.
⁂
420
The study of morbidity1 deals with the investigation of illness2, sickness2, ill-health2 or disease2 in a population. Two aspects are considered: the incidence of disease3 and the prevalence of disease4 according to whether the new cases of disease5 are considered or the number of cases existing at one point in time. The compilation of morbidity statistics6 is hampered by the lack of a sharp distinction between health and the morbid state7. Nosology8 and nosography9 contribute respectively to the classification and description of diseases.
- Disease, illness, or sickness are used as collective nouns in the singular, or both in the singular or plural to designate specific ailments.
421
Health statistics1 encompass morbidity statistics, but also cover all aspects of the health of a population, and are generally taken to include statistics of
cause-specific mortality2. The classification of deaths by
cause of death3 is made difficult because in many cases there may not be a
single cause of death4 but
multiple causes of death5 or
joint causes of death5. When this is the case we may distinguish between the
immediate cause of death6 and the
underlying cause of death7 or, looking at the problem from a different point of view, we may distinguish between the
primary cause of death8 or
principal cause of death8 and the
secondary cause of death9,
contributory cause of death9 or
associated cause of death9. The
cause-specific death rate10 is generally expressed per
100,
000 population. The ratio of the number of deaths from a specific cause to the number of deaths from all causes is referred to as the
cause-specific death ratio11. Such ratios calculated for specific age groups or the general population provide information of the underlying
structure of causes of death12★.
422
Death or
disability (
426-2) may be the consequence of
disease (
420-2) or of
injury1 or
poisoning2. Injuries may be due to
accident3 or
violence4. Among cases of violence it is normal to distinguish
suicides5 and
attempted suicides5,
homicides6 and
deaths or injuries due to operations of war7.
- Accident, n. - accidental, adj.
- Violence, n. - violent, adj.
- Homicide, n.: May in law be murder or manslaughter.
- Abbreviated to war deaths and war injuries.
423
An endemic disease1 is one that permanently affects substantial segments of a population, in contrast with an epidemic2, which spreads and then disappears within a fairly short time; when it appears in a large number of countries, it is called a pandemic3. Certain infectious diseases4 or communicable diseases4 have attracted particular attention, because they are capable of infecting large numbers of persons within relatively short time intervals. In such instances we speak of epidemic diseases5, and special epidemiological statistics6 are collected to show their incidence. It is possible to obtain information about these illnesses in various countries because legislation has made their reporting compulsory; they are therefore called notifiable diseases7. A distinction is sometimes made between chronic diseases8 and acute diseases9. These terms are not precisely defined, but acute diseases are generally understood to be those of abrupt onset and short duration while chronic diseases are those with slow onset and long duration, and often causing prolonged disability.
- Epidemic, n., also used as adj.
- Infectious, adj. - infect, v. - infection, n. The terms communicable diseases, contagious diseases and infectious diseases are not synonymous. A contagious disease can only be transmitted from person to person; thus, malaria, a communicable disease, is not contagious. Moreover, certain infectious diseases are not communicable.
- Epidemiology, n.: the science dealing with epidemics - epidemiologist, n.: a specialist in epidemiology - epidemiological, adj.: pertaining to epidemiology. The meaning of these terms has expanded greatly, and epidemiology now covers the study of relations between a biological or medical phenomenon and various factors, such as tobacco for example in "the epidemiology of lung cancer," or alternatively the statistical analysis of geographic variations in health phenomena.
424
Demographers devote particular attention to certain aspects of mortality: endogenous mortality1 which results from the genetic constitution of the individual, congenital malformations2, injuries connected with birth, or degenerative diseases associated with aging; exogenous mortality3, in contrast, results from external causes such as infectious or parasitic diseases and accidental injuries other than those incurred by the child during birth. Also of special interest are diseases connected with pregnancy, labor and the puerperium4. Mortality from these latter diseases is called maternal mortality5, and a maternal death rate6 may be computed as the ratio of maternal deaths in a year to the births of the same year. The proportion of deaths due to senility7 has mostly drawn interest as an index of poor reporting of causes of death.
- Infant mortality (410-1) can thus be decomposed into endogenous infant mortality and exogenous infant mortality.
- See note 1.
- The puerperium is the lying-in period following a birth, and the mortality of mothers during the period is called puerperal mortality.
- Senility n. - senile, adj.
425
Three aspects of morbidity (
420-1) are commonly measured by
morbidity rates1 or
morbidity ratios1: frequency, duration and severity. These indices may be computed for specific diseases, or for all diseases. Two indices of the frequency of ill-health are the
incidence rate2, the number of new cases of disease during the period related to the average population, and the
prevalence rate3, the number of cases existing at a given moment of time expressed per unit of the average population. Either the
average duration per case4, or the
disability rate5, which is the
mean number of days of illness5 per person in the population, may serve as a measure of the duration of illness. The
case fatality rate6, which is the proportion of fatal cases among the reported cases of the specified diseases, may be used as an index of severity.
- This is said to measure the lethality of the disease.
426
An
impairment1 refers to any physical, functional or psychological defect, which results from illness, injury or congenital malformation. When an impairment inhibits an individual’s ability to work or participate in normal activities it is referred to as
incapacity2 or
disability2. This may be total or partial; in either case,
permanent disability3 or
infirmity4 refer to an irreversible condition which gives rights to
professional incapacity7★ or
work incapacity8★ compensations. The probability that a healthy individual aged exactly x years will become disabled in the next year or over the course of some number of years starting with this exact age, is called the
risk of disability5 or the
probability of disability5. A series of these probabilities can be combined into a
disability table6, which is a specialized extension of the
life table (cf. §
432). It give rights to Professional incapacity or occupational disability
⁂
430
Mortality statistics are generally compiled from death registration (cf.
211). When a death takes place a
death certificate1 is generally issued; statistics are compiled from the information given on death certificates. In some countries a distinction is made between the
medical certificate of death2 issued by a medical practitioner who has attended the deceased person during his or her last illness, and an ordinary death certificate issued by the registrar of deaths for legal purposes.
- The first death statistics in England and Wales were compiled from bills of mortality which were generally drawn up on the basis of burial registers. In countries where vital registration is deficient, statistics can be gathered by the survey technique; questions may be asked on deaths during a reference period, generally the previous year; the indirect estimation of mortality relies on such question as the number of children surviving among children ever born (637-2), orphanhood status or widowhood status.
431
Probabilities of dying1 or death probabilities1 are used to study in detail the mortality of a period or of a cohort. They are the probabilities that an individual of exact age x will die before exact age x + n, and are represented by the symbol nqx. If n = 1, we talk about annual death probabilities2; if n = 5, about quinquennial death probabilities3. The instantaneous death rate4, or as it is occasionally called the force of mortality4, is the limit of the nqx value as n tends to zero. The projective mortality probability5★ is the probability that individuals of the same cohort or group of cohorts died between two January 1st. The name of this probability comes from its use in the calculation of population projections. The complement to one of the probability of dying from exact age x to exact age x + n is the probability of survival6 over this interval. In the preparation of population projections, we use survival ratios7; they represent the probability that individuals of the same birth cohort or group of cohorts will still be alive n years later.
- The probability of death between age x and x + n is defined as the ratio of deaths between ages x and x + n to the number of survivors at exact age x. It is not to be confused with the central death rate, the ratio of deaths between ages x and x + n to the mean population alive at that age. The central death rate is written nmx .
- The probability of survival from age x to age x + n is written npx .
432
The course of mortality throughout the life cycle may be described by a
life table1. A life table consists of several
life table functions2, all of which are mathematically related and may be generally derived when the value of one of them is known. The
survivorship function3 shows the number of
survivors4 of a
cohort (
116-2) of births to various
exact ages (
322-7) on the assumption that the cohort is subjected to the rates of mortality shown. The number of births in the original cohort is known as the
radix5 of the life table and the process by which the original cohort is reduced is known as
attrition6.
- The number of survivors to exact age x is denoted by lx .
- The radix is usually a power of 10: 10,000 or 100,000 for example.
433
To the survivors function corresponds a
death function1 which is calculated as the differences between the number of
survivors (
432-4) at different ages within the given age interval. It is named the
distribution of life table deaths2★ in order to be distinguished from the crude distribution of deaths. Life tables typically include the
expectation of life3 or
life expectancy3 at age x ; this is the mean number of years to be lived by those surviving to exact age x, given the mortality conditions of the table. The
expectation of life at birth4 is a particular case of expectation of life, and represents the
mean length of life4 of individuals who have been subjected since birth to the mortality of the table. The reciprocal of the expectation of life at birth is the
life table death rate5 or
death rate of the stationary population5.
- By integrating the survivorship function (432-3) between two exact given ages we obtain the total number of years lived by the cohort between these ages; the notation for the total number of years lived between age x and x + n is nLx . This function is often called the stationary population in life table column headings. By summing it from a given age x to the end of life, we obtain the total number of years to be lived after attaining age x by those reaching that age; the conventional notation is T x .
- The notation for the expectation of life at age x is ex
434
The
median length of life1 sometimes called the
probable length of life1 is the age at which half the original cohort of births have died. After infancy the distribution of deaths by age in the life table will usually have a mode and the corresponding age is called the
modal age at death2, or sometimes the
normal age at death2. It may be of interest as an indicator of
human longevity3 or the
length of life3 corresponding more closely to the sense in which the term is used in everyday language than either the average (
433-4) or the median length of life. The term
life span4 is used to refer to the maximum possible length of human life.
435
A
complete life table1 is usually one in which the values of the
life table functions (
432-2) are given in single years of age. An
abridged life table2 is one in which most functions are given only for certain pivotal ages, frequently spaced at five or ten year intervals after infancy; intermediate values for the functions are usually obtained by some form of interpolation (
151-7). The term
life table for selected heads3 is used to refer to a life table relating to the experience of a number of specially selected individuals, such as the clients of a life insurance company, in opposition to
general life tables4 which relate the experience of a whole
population (
101-4). Life tables are generally presented on a sex-specific basis although on occasion they are presented for both sexes. A life table which is based only upon the generalization of empirical relationships is called a
model life table5.
436
A
calendar-year life table1 or
period life table1 (cf.
153-2;
432-1) is one in which the mortality rates used relate to a specified time interval and the
cohort (
116-2) is therefore hypothetical. A
generation life table2, or
cohort life table2 on the other hand, traces the experience of an actual birth cohort and the mortality rates contained in the table are then spread over a prolonged period, usually about
100 years. A
mortality surface3 is drawn when
probabilities of dying (
431-1) are plotted against age and time period simultaneously in a three-dimensional diagram.
437
The Lexis diagram1 is commonly used to illustrate the usual method for computing death probabilities and other demographic measures. In this diagram, every individual is represented by a life line2 which begins at birth and ends in the point of death3. A method for the study of mortality at very advanced ages has been called the method of extinct generations4, because it uses observed deaths for cohorts which have been completely eliminated by mortality.
Chapter 5 • Nuptiality
501
The study of
nuptiality1 deals with the frequency of
marriages2 i.e. of
unions3 between persons of opposite sexes which involve rights and obligations fixed by law or custom; with the characteristics of persons united in marriage; and with the dissolution of such unions. By extension, it also includes the study of other
conjugal unions (
503-8) where their frequency makes their inclusion necessary. A
marriage4 or
wedding4 is the ceremony, prescribed by law or custom, which establishes such a union between a man and a woman as
spouses5, i.e.
husband6 and
wife7. The spouses jointly are called a
married couple8.
- Marriage, n. - marry, v. - married, adj. - marriageable, adj.: capable of contracting a marriage.
- A man at, or soon before or after his marriage, is a bridegroom (abbreviation: groom).
- A woman at, or soon before or after her marriage, is a bride.
502
Marriage laws1 or marriage customs2 differ in different societies. A society in which a person may be married to only one person of the opposite sex at a time is called monogamous3. Societies in which a person may be married to several persons simultaneously are called polygamous4. A distinction is made between polyandrous5 societies, where a woman may have several husbands, and polygynous6 societies, where a man may have several wives. The term "polygamy" is frequently used in the sense of polygyny.
- Monogamous, adj. - monogamy, n.
- Polygamous, adj. - polygamy, n.
- Polyandrous, adj. - polyandry, n.
- Polygynous, adj. - polygyny, n.
503
In some countries a legal union can be established only through a civil marriage1 performed by an official of the state; in other countries a religious marriage2 in accordance with the regulations of a church is recognized as having legal force. Social or legal recognition may be given under various conditions in different countries to stable unions which have not been solemnized by a legal or religious ceremony, for instance to customary marriages3 or to common law marriages3 conforming to local traditions. Different types of relationships and degrees of social acceptance are implied in terms applied to various unions but their significance varies widely in different countries. The term consensual union4 implies a socially recognized stable union, the term companionate marriage4 has a similar connotation. The terms free union5 and temporary union6 both imply a less stable union that may or may not include cohabitation7. Two persons of opposite sexes living in a stable union, whether legal or not, are called a couple8. The term conjugal union8 has been used by demographers to include both legal unions and more or less stable illegal unions.
- Concubinage, n.: a type of illegal union. A concubine in the restricted sense is a woman with an accepted conjugal status inferior to that of a legally recognized wife, particularly in polygynous societies. In other societies, the word concubine is sometimes used loosely to denote any woman other than a wife living in conjugal union with a man. Today such terms as companion or mate are preferred.
- Cohabitation, n.- cohabit, v.
504
In many countries a minimum age at marriage1 is laid down by law. The age differs from country to country and may be different for the two sexes. Marriages among persons closely related by blood are called consanguineous marriages2 and are generally prohibited by either law or custom. Persons who are forbidden to marry one another for these reasons are said to be within the prohibited degrees of consanguinity3.
505
In some countries the
publication of banns1 or
intent to marry1 is a necessary preliminary to a
marriage (
501-4), giving public notice to persons interested, who may then oppose the marriage if they have reason to do so. In many countries a
marriage license2 must be obtained before the marriage ceremony can take place. A
marriage certificate3 is usually delivered to the
newly married couple4 after the ceremony. The
consummation of marriage5 has occurred, or a marriage has been
consummated5 when sexual relations have taken place between the spouses.
- Before the celebration of the marriage the future spouses are said to be engaged or betrothed, words which come from the custom of engagement or betrothal which consists of a more or less formal exchange of promise to marry.
506
Endogamy1 exists where both spouses must belong to the same group (e.g. tribe, clan). The term is also used to denote a tendency for spouses to be members of the same social or geographical group or isolate2, which is generally of limited size. The opposite requirement or tendency is called exogamy3. Mixed marriages4 are marriages between persons of different nationalities, races, religions, etc. When marriage is contracted between persons with certain common characteristics, social, physical or mental, it is called homogamy5, the opposite is called heterogamy6.
- Endogamy, n. - endogamous, adj.
- Exogamy, n. - exogamous, adj.
- Homogamy, n. - homogamous, adj.
- Heterogamy, n. - heterogamous, adj.
⁂
510
At the close of married life1 or conjugal life1, the end of union2 coincides with the dissolution of marriage3, i.e. the breaking of all legal obligations resulting from the status of spouse, including the removal of legal obstacles to a new marriage. If a marriage is dissolved by death the surviving spouse is called a widower4 if male and a widow5 if female. Widowed persons6 live in a state of widowhood7.
511
Where
divorce1 as an institution is recognized, the dissolution of
marriage (
510-2) may take place through the granting of a
decree of divorce2 to one of the spouses. In some countries a spouse may be
repudiated3 by the other. Persons whose marriages have been dissolved by divorce are called
divorced persons4. The French words
divorcée (fr)6 (woman) or
divorce5 (man) are sometimes used in English, though the masculine form is rare.
- Divorce, n. and v.
512
In some countries the principle of the
indissolubility of marriage1 is upheld by law or custom and
divorce (
511-1) is not allowed; only the death of one of the
spouses (
501-5) may bring about
dissolution of the marriage (
510-3). Under any legal system, however, lack of harmony may lead to
separation2 of the spouses. This may take the form of a
de facto separation3, either through common consent or as the result of the
desertion4 of one of the spouses by the other. Or it may take the form of a
legal separation5 or
judicial separation5. A judicial separation absolves the parties from certain obligations, including the duty of living together, or cohabitation, but does not enable either of them to contract a new marriage. Persons whose marriages have been broken by separation are called
separated persons6. Marriages in which the spouses no longer cohabit but which have not been legally dissolved may be called
broken marriages7.
513
A
decree of nullity1 or an
annulment of marriage1 is a declaration by a court of law that, although a marriage ceremony has taken place, there has been no
valid marriage2. The expression
dissolved marriage3 is frequently understood to include cases of annulments and of legal separation, although legally the marriage is not dissolved. The term
end of union (
510-2) is more appropriate than dissolution in such cases and may also refer to unions other than marriage.
514
From a legal point of view, any person who meets the conditions set by law or custom to contract a marriage is
marriageable1, and the
marriageable population2 is made up of such persons; the
non-marriageable population3 consists of those who are not free to do so by law or custom. The
marriage market4, the
marriageable circle5★ or
group of persons5★ among whom
mate selection6 takes place however, does not include all marriageable persons;
candidates to marriage7 include only those who are not excluded, at least temporarily, by reasons of health or other circumstances from the marriage market. Widowed or divorced persons may contract a new marriage; there is thus a distinction between a
first marriage8 and a marriage of higher order, or
remarriage9. Because the
order of marriage10 may differ for the two spouses, the term “first marriage” is ambiguous unless specified as referring to
groom (
501-6*) or to
bride (
501-7*) or to both parties; unless otherwise specified, it refers to a marriage between a bachelor (
515-3) and a spinster (
515-4).
- Remarriage, n. - remarry, v. - remarried, adj.
515
The population may be divided into different groups by
conjugal status1,
marital status1 or
marital condition1.
Single2 persons,
bachelors3 (men) and
spinsters4 (women), are those who have never been married; they are also sometimes called the
never-married2 class. The class of
married persons5,
married men6 and
married women7, consists of those who have been married and whose marriages have not been
dissolved (
513-3). All persons except single persons are
ever-married persons8.
- A synonym is celibate, adj. - celibacy, n.: the state of being single.
⁂
520
Relative marriage frequency is measured by
marriage rates1 or
nuptiality rates1, among which the
crude marriage rate2 gives the ratio of the total number of marriages to the total population in a given period.
Male nuptiality3 and
female nuptiality4 are often different, and can be studied separately. The terms male nuptiality and female nuptiality are used for the marriage frequency of the different sexes. A
sex-specific marriage rate5 can be computed with the appropriate population of each sex as a base. It is usual to distinguish between a
first marriage rate6, which relates the number of
bachelors or
spinsters (
515-3 and 4) marrying to the total number of bachelors and spinsters respectively and a
remarriage rate7 which relates the number of remarriages to the total number of widowed and divorced persons. Similar rates can be computed by age or age-group of husband and wife whenever marriages are classified by
age at marriage8 of each spouse; such rates are called
age-specific marriage rates9. The tabulation of spouses by age at marriage permits the computation of the
mean age at marriage10 or
average age at marriage10 for the given year or period.
Age differences between spouses11 can be analyzed from a classification of the
combined ages12 of the spouses.
- Sometimes the crude marriage rate is obtained by relating the number of newly married persons to the total population.
- The terms marriage frequencies and first marriage frequencies have sometimes been used to refer to the ratio of the number of marriages or first marriages at a certain age, to the total number of persons of that age, irrespective of their marital status. Cumulated marriage frequencies and cumulated first marriage frequencies are used in cohort studies.
521
The prevalence of marriage in a generation of men or women is measured by the proportion never married1. This is usually equivalent to the proportion remaining single2 at an age such as 50 after which first marriages are rare. The proportion remaining single at each age in a cohort can be computed from first marriage probabilities3, i.e. the proportion of single persons at exact age x who will marry before exact age x + 1, assuming that there is no mortality. For practical purposes, however, the proportion remaining single is usually obtained from census data as the proportion single4 at that age in the corresponding cohort. When a classification of first marriages by age of the spouses is available the mean age at first marriage5, the median age at first marriage6 and the modal age at first marriage7 can all be computed. In the absence of data on the timing of marriages, it is often possible to compute a singulate mean age at marriage8 from census data on the proportions single by age.
522
Nuptiality tables1 resemble life tables, and combine various nuptiality functions. The
gross nuptiality table1 includes, by age, the
first marriage probabilities (
521-3) and
proportions remaining single (
521-2), as well as the
number of first marriages2 in a cohort of given size subjected to the prevailing nuptiality on the assumption that there is no mortality; it also gives the
numbers remaining single3 at various ages. The
net nuptiality table4 takes mortality as well as nuptiality into account, and is a particular case of
double decrement tables (
153-4). Such a table includes the
single survivors5, the
ever-married survivors6, the
probability of single survival7 and the
expectation of unmarried life8.
523
A divorce rate1 can be calculated in different ways. The crude divorce rate2 gives the ratio of the number of divorces to the average population during a given period. The ratio of divorces to the number of married couples is sometimes computed and may be called the divorce rate for married persons3. If divorces are tabulated by the age of the divorced person or by duration of marriage, age-specific divorce rates4 and duration-specific divorce rates5 can be computed. Another index of divorce frequency is obtained by computing the number of divorces per new marriage6.
- This is a period measure which relates the divorces of one year, either to the marriages of that year, or to a weighted average of the marriages of several years. In cohort analysis, it is possible to relate divorces in successive years to an initial marriage cohort to compute the cumulated proportion divorced.
524
When the requisite basic statistics are available, marriage dissolution probabilities1 may be computed, showing for each sex the probability of the marriage being dissolved by death or divorce according to duration of marriage2; marriage dissolution tables are an application of double decrement life tables. Remarriage tables for widowed and divorced persons can also be computed, but the most common indices of remarriage are the relative frequency of remarriage3, i.e. the proportion of widowed or divorced persons who remarry, often given by age at widowhood or divorce, and by the interval between widowhood or divorce and remarriage. The latter information enables one to compute the mean interval between widowhood and remarriage4 and the mean interval between divorce and remarriage5.
Chapter 6 • Fertility
601
Demographic studies of
fertility1 deal with certain phenomena connected with human
childbearing2 or
reproduction2. The term
natality1 is sometimes used instead of fertility. These terms refer to the frequency of occurrence of
births3 or more specifically
live births4 — within populations and sub-populations. A birth is the process of delivering a child. Live births or the births of
live-born children5 are distinguished from
late foetal deaths (cf.
411-5) by evidence of life, such as respiration, movement of voluntary muscles or heartbeat of the child after complete expulsion or extraction. The term
effective fertility6, which was once used to indicate that late foetal deaths were not counted among the total number of births, should refer to the cases in which the deaths of infants or children are excluded from consideration. The term
crude fertility7★ should refer to all births including stillbirths (
411-5) or foetal deaths. The term
differential fertility8 designates fertility differences between the subgroups of a population.
- On the meaning of the term fertility in demography, see also § 623.
- Reproduction, n. - reproduce, v. - reproductive, adj. Frequently, reproduction refers to the balance of births and deaths (as in § 711) rather than to the process of childbearing or procreation.
- The word birth is now commonly used to mean live birth.
- Live-born, adj. also used as noun to mean: infant born alive.
602
Conception1 results from the fertilization2 of an ovum3 by a spermatozoon4 or sperm cell4 and marks the beginning of pregnancy5 or gestation5 for the impregnated woman. In the course of its development the product of conception6 is successively called an embryo7 and then a foetus7 — sometimes written as fetus7. The moment at which the embryo becomes a foetus is not precisely determined: certain scientists set it at the end of 12 weeks or three months of intra—uterine life, although successive developmental stages after the eighth week are often termed foetal. Nidation8 refers to the implantation of the egg in the wall of the uterus9 or womb9, a process which occurs a few days after fertilization.
- Conception, n.- conceive, v.
- Fertilization, n. - fertilize, v.
Artificial fertilization: fertilization obtained by artificial insemination, i.e. by a process other than coitus (627-2).
- A fertilized ovum is called an egg or zygote.
- Pregnancy, n. - pregnant, adj.: gravid, expectant. Certain scientists consider that a pregnancy begins only at the time of nidation (602-8) of the egg.
- Embryo, n. - embryonic, adj. - embryology, n.: the science dealing with the development of the embryo.
Foetus or fetus, n. - foetal or fetal, adj. (cf. 411).
- Uterus, n. - uterine, adj.
603
A foetus is said to be
non-viable2 during the first part of a pregnancy and
viable1 thereafter. The change occurs when the foetus becomes capable of independent existence outside its mother, which is commonly considered to take place when the
period of gestation3 or
duration of pregnancy3 has exceeded 28 weeks. If the pregnancy has lasted longer than this, the expulsion of the foetus (alive or dead) takes place during
confinement4; an earlier explusion associated with an early foetal death is called an
abortion5 (cf. §
604). The period of about six weeks after delivery (during which the uterus usually regains its normal size and in which the probability of conception is low) is called the
puerperium6.
- Viable, adj. - viability, n.
- The minimum period determining viability varies between 20 and 28 weeks among countries, but the World Health Organization has recommended that 28 weeks be the standard time period. Generally the duration of pregnancy is computed from the onset of the last menses. This constitutes the conventional duration of pregnancy, as opposed to the true duration of pregnancy, computed from the time of conception.
- The actual process of expulsion of the foetus is called delivery or parturition, which is the termination of labor. In addition to those, confinement includes expulsion or removal of the placenta or afterbirth.
- Abortion, n. - abort, v.t. or v.i. - abortifacient, adj. used as n.: capable of inducing abortion. - abortionist, n.: a person who performs abortions. In everyday language, the term abortion often takes the meaning of induced abortion (604-2), as opposed to spontaneous abortion (604-1).
- Puerperium, n. - puerperal, adj. (cf. 424-4).
604
Abortions following a non-induced infra-uterine death, which may have occurred some time before expulsion, are called spontaneous abortions1 or miscarriages1, in contrast to intentional abortions2, or induced abortions2. A therapeutic abortion3 is one undertaken for medical reasons. The laws of certain countries permit abortions for health or other reasons; these are legal abortions4. Abortions which are induced contrary to law are called illegal abortions5 or criminal abortions5. According to the technique used, there are abortions by curettage6, abortions by vacuum aspiration7, abortions by dilatation and evacuation7, hysterotomies8 (involving surgical cutting into the uterus), and abortions by medical induction procedures9.
- Also called abortions by dilatation and curettage, (abbreviated to D and C).
- Also called abortions by suction. When the procedure is used very soon after a presumed conception, the terms menstrual regulation or menstrual extraction are used.
- Such procedures involve amniotic fluid exchange as in the instance of an abortion by saline injection, or the use of prostaglandins.
605
Full term deliveries1 occur when the pregnancy has lasted at least 37 weeks, measured in
conventional duration of pregnancy (
603-3*). A pregnancy ending before the normal period is termed a
premature delivery2 or
premature confinement2 or
premature birth2 and the product of this delivery is called a
premature baby4. Births which are not premature are called
births at term3 or
full-term births3. The word
prematurity5 is used to refer to phenomena connected with premature delivery. A classification of births by stage of development that does not depend upon an estimate of the period of gestation is used in many countries. In this classification a live-born infant with a
birth weight6 of 2,
500 grams (5 1/2 lbs.) or less is said to be
immature8.
Immaturity7 is often combined with
debility9, an abnormal state of weakness.
606
At most confinements there is a single birth1 or single delivery1 but at some there are plural births2, multiple births2 or multiple deliveries2. Two children born during the same confinement are called twins3 and we may distinguish between monozygotic twins4, uniovular twins4 or identical twins4 on the one hand, and dizygotic twins5 or biovular twins5 on the other. Monozygotic multiple births occur when one ovum splits after fertilization; the resulting children must always be of the same sex. Dizygotic multiple births are due to the simultaneous fertilization of two or more ova and the resulting children may be of different sexes.
- In British official terminology the term maternity is used to denote a confinement resulting in the birth of one or more children; the number of births per maternity may be computed.
- Where a multiple birth results in three children, these are-called triplets, four are quadruplets, and five quintuplets. The terms "twins", "triplets", etc. are generally used in accordance with the total number of deliveries during a confinement; occasionally, however, multiple births are classified only in accordance with the number of children born alive.
⁂
610
Births are classified by
legitimacy1. Strictly speaking, a
legitimate child2 may be defined as one whose father and mother were married to one another at the time of conception. But in practice, the classification depends upon the marital status of the mother at the time of the birth or, after the
dissolution of marriage (
510-3), at the time of conception. A
legitimate birth3 is the delivery of such a .child; other births are
illegitimate births4. It is general practice to consider as legitimate the children who result from
pre-marital conceptions5 or
pre-nuptial conceptions5 (i.e., conceptions occurring before marriage) provided that the parents are married to each other at the time of the birth. An
illegitimate child6 or
child born out of wedlock6 may be
legitimized8 or
legitimated8 by the subsequent marriage of its parents. The process of
legitimation9, which varies in different countries, may confer on the illegitimate child some or all of the legal rights of legitimate children. In some legal systems it is possible for a father to grant
recognition7 to, or
acknowledge7, his illegitimate child, i.e., to admit in legal form that he is the child’s father.
- Bridal pregnancies is also used in this connection.
- The legal term bastard has acquired a derogatory meaning but is occasionally used by historical demographers. According to the law of some countries a child is illegitimate if it results from adulterous relations or extra-marital relations i.e., a connection between a married woman and a man other than her husband, but such a birth is not always registered as illegitimate.
611
Births are also classified by
birth order1, e.g. first births, second births, etc. Birth order is usually determined by considering all
previous births to the mother3, and sometimes only
births of the present marriage2. Birth order is generally based on live births only, but occasionally late foetal deaths are taken into account as well. A classification of women by
confinement order4 is made in the same way as for births by counting all pregnancies which lasted at least 28 weeks, and reckoning multiple births as one confinement (cf.
603-4). Similarly a classification by
pregnancy order5 is made by counting all known pregnancies. In medical parlance, a woman is called
nulligravida6 if she has never been pregnant; the terms
primigravida7 and
multigravida8 respectively are used for a woman who is pregnant for the first time or who has been pregnant before. Women are also classified by
parity9, usually on the basis of the number of children born alive, although in biological literature the term refers to the number of confinements, and a woman who has had no confinement at all is said to be a
nullipara10 or
nulliparous10. Similarly, a woman is termed a
primipara11 and deemed to be
primiparous11 at her first confinement and a
multipara12 or
multiparous12 at subsequent confinements.
- Higher order births are births occurring after the last specified order, e.g. fifth and higher order births.
- A woman who has not borne any live children is called a zero-parity woman, a one-parity woman has borne one child but no more, and so on.
612
Studies of
birth timing1 deal with the length of
birth intervals2. These include the
interval between marriage and the first birth3 and
intervals between successive births4. The interval between a birth and a fixed date, such as that of a
census (
202-1 *) or
survey (
203-4), is called an
open birth interval5; intervals that begin before and end after that date are called
straddling intervals6. The
interval between marriage and the Nth birth7 is also used to study the timing of births.
- Birth spacing, although sometimes found in the sense of birth timing as above, is commonly used to refer to the deliberate efforts of couples to postpone a birth.
- Also called first birth intervals. The second birth interval is that between the first and the second birth; and so on.
- As seen from the vantage of that census or survey, the intervals between the recorded successive births are called closed birth intervals.
613
In computing the period of exposure to the risk of conception1 it is necessary to consider pregnancy intervals2. The interval between marriage and the first pregnancy is the conception delay3 or first pregnancy interval3. The period between the end of one pregnancy and the beginning of the next is the inter-pregnancy interval4. If the time when the woman had no sexual activity is subtracted, a net inter-pregnancy interval5 is obtained. The period between the end of the last pregnancy and the date of a survey is called an open inter-pregnancy interval6.
⁂
620
The
reproductive period1 (or in women the
childbearing period1) begins at
puberty2.
Menstruation3 — the appearance of the
periods4 or
menses4 in women — also begins at puberty. The first period is called the
menarche5 and menstruation ceases with the
menopause6, which is also sometimes called the
climacteric6. In practice, the reproductive period is often made to start, by convention, at 15 years or at the
minimum age at marriage (
504-1) and, for some, to end at 45 or 50 year. The temporary absence of menstruation, be it normal or pathological, is called
amenorrhea7.
Pregnancy amenorrhea8 occurs after a conception, and
post-partum amenorrhea9 after a confinement.
- The terms reproductive ages or fecund ages are also used.
- Menstruation, n. - menstruate, v. - menstrual, adj.
- Menopause, n. - menopausal, adj. The expression change of life is used as a synonym for menopause in colloquial language.
621
The capacity of a man, a woman or a couple to produce a live child is called fecundity1. The lack of that capacity is called infecundity2 or sterility2; inability to conceive3 and inability to procreate10★ are the main, but not the single causes of sterility. Used alone, sterility usually carries the connotation of irreversibility, but occasionally temporary inability to conceive4★ and temporary sterility5 are distinguished from permanent inability to conceive6★ and permanent sterility7. Among women we distinguish primary sterility8 where the woman has never been able to have children, and secondary sterility9, which arises after one or more children have been born.
- Fecundity, n. - fecund, adj. An alternative meaning of the term implies the ability to conceive, rather than to produce a live child. The terms sub-fecundity and sub-fecund mean either that the capacity to produce a live child is below normal, or that the probability of conception is low.
- Sterility, n. - sterile, adj. Infecundity, n. - infecund, adj.
622
The term
temporary sterility (
621-5) is used even in instances where a woman’s inability to conceive is not the result of a pathological condition.Women are said to have
sterile periods1 in each
menstrual cycle2, because generally conception can occur only during a few days around the time of
ovulation3. The period of sterility that extends from
conception (
602-1) to the return of ovulation after a delivery, which includes
pregnancy (
602-5) and is influenced by the duration of
breastfeeding4, is called the
nonsusceptible period5, particularly in mathematical models of reproduction. Temporary sterility is also used to refer to the occurrence of
anovulatory cycles6 (i.e., menstrual cycles in which ovulation does not occur) or to abnormal periods of amenorrhea. The
sub-fecundity7 of very young women is commonly called
adolescent sterility8; it would be better to talk about
adolescent sub-fecundity8.
- The period between delivery and the return of ovulation is often called the period of post-partum sterility.
- Also called anovular cycles.
623
Fertility1 and
infertility2 refer to reproductive performance rather than capacity, and are used according to whether there was actual childbearing or not during the period under review. When it concerns the complete reproductive period, the term
total infertility3★ may be used while
permanent infertility4 may extend from a certain age or marriage duration to the end of the childbearing years.
Voluntary infertility5★ is used when the absence of procreation corresponds to a decision of the couple (
503-8).It should be noted that in many Latin languages, the cognates of fertility and fecondity are used in a sense diametrically opposite to that in English. Thus, the French
fécondité and the Spanish
fecundidad are properly translated by fertility, and
fertilité and
fertilidad by fecondity.
- Fertility, n. - fertile, adj.
- Infertility, n. - infertile, adj.
Childlessness, n. - childless, adj. : refer to the state of a women, man or couple who have been so far infertile.
624
The
fertility (
623-1) of couples will depend upon their
reproductive behavior1. A distinction is drawn between
planners2, couples who attempt to regulate the number and
spacing (
612-1*) of their births, and
non-planners3, couples who make no such attempt.
Family planning4 has a broader meaning than
family limitation4 which refers to efforts not to exceed the
number of children wanted5. The terms
birth control6 or
fertility regulation6 are not restricted to the activities of married persons.
- A classification according to family planning status distinguishes couples who have not tried to regulate the number and spacing of their children from those who have tried to do so.
- Unwanted births or unintended births are those that occur after the total family size desired by the couple has been reached. They are distinguished from unplanned births that may have occurred at a time that was not intended, and perhaps outside of wedlock.
625
Family planning implies a concern with
planned parenthood1 or
responsible parenthood1, i.e., the desire to determine the number and spacing of births in conformity with the best interest of each couple, or of society. The number of children expected by a couple may differ from the
desired number of children2 or
intended number of children2 reported by the couple in a survey. Even if these goals are not revised, they may be exceeded as a result of
contraceptive failures3 ; the frequency of the latter depends on
contraceptive effectiveness4 which has two aspects.
Theoretical effectiveness5 or
physiological effectiveness5 indicates how reliable a method is when used all the time according to directions.
Use effectiveness6 measures its reliability when used in everyday situations by a given population. Reasoning in terms of
residual fecundability (
638-7), use effectiveness is usually measured by the
contraceptive failure rate7 which relates the number of unintended conceptions to the length of exposure to the risk of conceiving.
- In other terms, birth expectations differ from reproductive intentions. A distinction is made between desired family size, the number of children a woman, man or couple wants to have, and the ideal family size which they envision for their society. Intended family size may be lower than desired family size.
- Unplanned births are often opposed to planned births.
- 5. and 6. Efficacy is a synonym for effectiveness in these expressions.
- Not to be confused with the demographic effectiveness of a family planning program (see 626-7), or of a method in a population.
626
A
family planning program1 seeks to introduce and diffuse birth control in a group of
potential users2 or in a
target population2. Teams of
fieldworkers3, including
canvassers3,
motivators3 and
distributors3, attempt to reach and convince the population to use contraception or abortion. The success of the program can be measured by the
proportion of new acceptors4 in the target population, or by the
acceptance rate4; for the acceptors of contraception, the
continuation rate5 after a certain lapse of time and its complement, the
termination rate6 or
drop-out rate6 are also computed. Estimates of the numbers and proportions of
births averted7 reflect the
demographic effectiveness (
625-4*) of the program. Contraceptive prevalence in a population is estimated by the
proportion of current users8 of contraception from a relevant universe, such as married women of reproductive age.{
- Special surveys of knowledge, attitudes and practice of contraception have been called KAP surveys in abbreviation.
627
Contraception1 refers to measures which are taken in order to prevent
sexual intercourse2 or
coitus2 from resulting in conception; the term covers contraceptive
sterilization (
631-1).
Birth control methods3 is used in a broader sense than
contraceptive methods3 to include induced
abortion (
604-2).
Abstinence4 from coitus, particularly
periodic abstinence (
628-4) is often included among contraceptive or birth control methods.
- Contraception, n. - contraceptor, n.: one who practices contraception. Contraceptive, adj. : used for contraception.
- Abstinence, n. - abstain, v.
628
A distinction is frequently drawn between appliance methods1 of contraception and non-appliance methods2. One principal non-appliance method of contraception is coitus interruptus3 or withdrawal3. Another non-appliance method of contraception is periodic abstinence4 or the rhythm method4, in which coitus is avoided during the period when the woman is believed to be fecund and takes place only during the so-called safe period5 of the menstrual cycle. The basal body temperature method6 refers to the method in which the woman keeps track of her temperature to identify the safe period.
- Appliance methods include not only barrier methods which are used to prevent the union of the sperm and ovum, but also methods using other contraceptive devices such as the intra-uterine device (629-10) and other types of contraceptives such as the pill (630-4).
- The term natural family planning methods has been applied collectively to cover the rhythm method, the basal body temperature method, and other techniques which attempt to identify stages of the woman’s ovulatory cycle.
629
The barrier methods which are more commonly used alone or in combination include the condom1 or sheath1, used by men, and the cervical cap2 or pessary2, the diaphragm3, tampon4 or sponge4, contraceptive jelly5, suppository6, foam tablets7 and douche8 with or without spermicide9, used by women. There are various types of intra-uterine devices10 (abbreviated to IUD10), including the loop10, the coil10, the copper T10, etc.
⁂
630
Oral contraceptives1 are a method of hormonal contraception2 or contraception by steroids3. These inhibit ovulation by regular ingestion of the pill4, or by injections or implants.
631
Sterilization1 results from various surgical procedures: on the male, vasectomy2 or occlusion3★ involves tying and cutting the vas deferens; on the female tubal ligation4 and salpingectomy5 or tubectomy5 involve interventions on the fallopian tubes. Hysterectomy6 or excision of the uterus, also involves sterilization of the woman.
- and 5. Various procedures are used to gain access to the Fallopian tubes, such as laparotomy, colpotomy or laparoscopy.
632
The general term
birth rate1 refers to a rate calculated by relating the number of live births observed in a population or sub-population during a given period to the size of the population or sub-population during the period. The rate is usually stated per 1,
000, and the most usual period is one year. Where the term birth rate is used without qualification, it is understood to be the
crude birth rate2, and all live births are related to the entire population. The
total birth rate3 based on live births and late foetal deaths is sometimes calculated.
Legitimate birth rates4 and
illegitimate birth rates5 are also calculated with legitimate and illegitimate births in the numerator and the currently married and unmarried female population, respectively, in the denominator. The
illegitimacy ratio6, the number of illegitimate births per 1,
000 total births, is more frequently used, however. To compare the fertility of different populations,
standardized birth rates7 are often used to eliminate the effect on the birth rate of certain differences in structure of the population (most commonly the age and sex structure). The
child-woman ratio8, most commonly the number of children aged 0 to 4 per 1,
000 women of childbearing age, e.g., 15 to 49, is used as an index of fertility when reliable birth statistics are not available.
- The denominator of the legitimate and illegitimate birth rate is sometimes the total population.
- See note 4.
633
The term
fertility rate1 is often used when the denominator of the birth rate fraction is restricted to a group of individuals of the same sex in the reproductive ages (
620-1). This denominator is commonly the mid-year population in the stated period, but it may also be the number of years lived by the group during the period, or the mean size of the group. Unless otherwise indicated, these rates are
female fertility rates2, and the rates are calculated for groups of women; the number of years lived by a given number of women in an interval is called the number of
woman years3.
Male fertility rates4 are computed sometimes in an analogous manner. Fertility rates are generally expressed as births per thousand (implied: individuals of the same category — sex, age, marital status, etc. — cf.
133-4*).
Marital fertility rates5 or
legitimate fertility rates5 relate the total number of legitimate births (
610-3) to the number of currently married women;
non-marital fertility rates6 or
illegitimate fertility rates6 relate the total number of illegitimate births (
610-4) to the number of single, widowed and divorced women.
Overall fertility rates7 make no distinction according to the legitimacy (
610-1) of the births or the marital status of the parents. The
general fertility rate8 relates the total number of births to all women of reproductive age regardless of marital status. Rates based on a narrower age range (usually one-year or five-year age groups) are called
age-specific fertility rates9 or
age-specific birth rates9.
- In many expressions used in this and following paragraphs, birth rate is used synonymously with fertility rate.
- Marital fertility or legitimate fertility: the fertility of married persons (see 635-1).
- Non-marital fertility or illegitimate fertility: the fertility of unmarried persons.
634
Order-specific fertility rates1 relate births of a certain order to a number of women, to a number of marriages or to a number of births of the preceding order.
Parity-specific fertility rates2 or
parity-specific birth rates2 not only restrict the numerator to births of a given order, but also restrict the denominator to the women of the
parity (
611-6)
at risk (
134-2), e.g., second order births to one-parity women. Such rates are usually age-specific or duration-specific. In
parity-specific birth probabilities3, the numerator consists of the number of births of order x + 1 occurring during a period, and the denominator consists of the number of women of parity x at the beginning of the same period.
635
When studying
marital fertility1 it is possible to arrange the data by
marriage cohorts (
116-2) of the mothers, and
marriage duration-specific fertility rates2 are often computed in preference to
age-specific marital fertility rates3.
636
The term
cohort fertility1 refers to the reproductive performance of particular birth or marriage cohorts (
116-2). When the age-specific or marriage duration-specific fertility rates are summed from the cohort’s beginning of exposure to risk until some later date, we speak of
cumulative fertility2:
age-specific cumulative fertility3★ or
marriage duration-specific cumulative fertility3★ when then ending date is that of a womans birthday or marriage (
501-4),
completed fertility4 or
lifetime fertility4 is the cumulative fertility until the date when all members of the cohort have reached the end of the reproductive period. The sum of the products of the fertility rates of the cohort by the probability of survival of the women to successive ages could be called the
cumulative net fertility5,
age-specific net cumulative fertility6★ or
marriage duration-specific net cumulative fertility6★ and
net complete fertility7★ or
net lifetime fertility7★ of the cohort.
- Before the end of the reproductive period, the terms incomplete fertility or fertility to date are employed to show that the cohort’s cumulative fertility may be expected to increase.
637
Censuses and surveys may provide information on fertility when they include questions on the number of children born to enumerated women or couples, either during the
current marriage1, or overall. The
mean number of children ever born per woman2 or
average parity2 can be computed. The number of children per couple is sometimes called
average family size3. It is also possible to calculate the
mean number of births per marriage4. Special attention is paid to
marriages of completed fertility5, those in which the wife had reached the end of the reproductive years before the marriage was dissolved. The
final parity6 or
completed parity6, i.e., the mean number of children per woman past the childbearing age, is not very different from
completed fertility (
636-4). The tabulation of final parity or completed fertility by number of children serves to compute series of
parity progression ratios7; these are fractions whose denominator is the number of women with
n children, and whose numerator is the number of women with
n + 1 children. Special studies yield information on
family formation8 and the
family life cycle8. Among those,
frequency of premarital conceptions9★,
birth intervals (
612-1) and the
age at the birth of the last child10 for women of completed fertility are of particular interest.
638
Fertility histories1 or
reproductive histories1 are accounts obtained for individual women of the important events in their reproductive lives, such as marriages, pregnancies, births, infant deaths, etc., and their dates. Fertility histories are often obtained retrospectively from surveys.
Family forms1 are used in
historical demography (
102-1), where they are established for a married couple and its children by
family reconstitution2 on the basis of
vital records (
211-3). A woman’s
pregnancy history3 or
pregnancy record3 contains detailed information about her pregnancies including the date when each began and ended, and the outcome of the pregnancy. Such detailed records on the timing of fertility have been used for various purposes. For example, they can provide information on
natural fertility4, i.e., fertility in the absence of
family limitation (
624-4). They are also used to estimate
fecundability5, the probability of conceiving per
menstrual cycle (
622-2). A distinction is made between
natural fecundability6, in the absence of contraception, and
residual fecundability7 in the opposite instance. The term
effective fecundability8 designates a fecundability that is reckoned in terms of conceptions that result in live births only. The
conception rate9 during the period of
exposure to risk often estimated using the
Pearl index10★ (
613-1) is used to measure the effectiveness of contraception during periods of contraceptive use.
- Birth histories are usually limited to live births.
- When used alone, the word fecundability stands for natural fecundability.
639
A summary index of period fertility1, i.e., the fertility of a particular year or period, computed by the summation of the series of age-specific fertility rates constituting the fertility schedule2 and representing a synthetic measure of fertility3, is the total fertility rate4 or total fertility4. Other summary period indices can be obtained, such as the total legitimate fertility rate5, the summation of marriage duration-specific fertility rates, and the order-specific total fertility rate6, the summation of age-specific fertility rates order by order. The ratio of births to marriages7 is computed by relating the number of births of a given year, either to the marriages of the year, or to a weighted average of the marriages of the current and of the preceding years.
- Also, fertility distribution or fertility function.
- This is not a rate in the meaning of (133-4). Total fertility for a given year represents the number of children that would be bom per 1,000 women if they experienced no mortality and were subject to the age-specific fertility rates observed for that year. The period gross reproduction rate (see 711-4) which is derived by multiplying the total fertility rate by the proportion of female births, has often been used in the past, but the total fertility rate is preferred at present as the summary index of period fertility.
- Or total marital fertility. The term is also used to describe the sum of the age-specific marital fertility rates above age 20.
640
Where
induced abortion (
604-2) has been legalized, it is possible to compile statistics on
legal abortions (
604-4). The
abortion rate1 is a measure of the frequency of abortion in a population during a given period, usually a year. Abortions may be related to the total population or to the number of women in the reproductive ages and may be specific for age, parity or any other characteristic. The
abortion ratio2 is a measure of the frequency of abortions in relation to the number of
live births (
601-4) during the same period. The
life-time abortion rate3 is the sum of
age-specific abortion rates4★ and is a synthetic measure of abortion per woman or per
1000 women. These rates are the ratio of the number of abortions reported at each age to years lived by all women of the same age. If women can be classified according to their marital status,
abortion rates by age and marital status5★ can be obtained. It is often also relevant to divide the number of abortions by the number of conceptions and so to calculate the
probability that a pregnancy results in an abortion by age and marital status6★.
Chapter 7 • Population growth and replacement
701
The interaction of fertility, mortality and migration leads to a consideration of population growth1. A zero population growth10★ refers to a population of invariable size. It is convenient to regard population decline2 as negative growth3. A distinction may be drawn between a closed population4 in which there is no migration either inwards or outwards and whose growth depends entirely on the difference between births and deaths, and an open population5 in which there may be migration. The growth of an open population consists of the balance of migration6 or net migration6 and natural increase7, which is the excess of births over deaths8 or deficit of births over deaths9★ sometimes called the balance of births and deaths8. Any change in one variable affects the overall growth and structure of a population; in this context growth effects11★ and structural effects12★ are determined.
702
The ratio of total growth in a given period to the mean population of that period is called the
growth rate1. Occasionally this rate is computed with the population at the beginning of the period rather than with the mean population as a denominator. When population increase over a period of more than one calendar year is studied, the
mean annual rate of growth2 may be computed. In computing this rate it is sometimes assumed that the population is subjected to
exponential growth3 during the period, and time is treated as a continuous variable. The size of an
exponential population4 would grow as an exponential function of time. The
exponential growth rate5 is equal to the
instantaneous rate of growth5. The ratio of natural increase (
701-7) to the average population during a period is called the
crude rate of natural increase6 and is equal to the difference between the crude birth rate and the crude death rate. The
vital index7 is the ratio of the number of births to the number of deaths during a period; this measure is no longer much used.
- When time is treated as a discrete variable, reference is made to geometric growth.
- This is occasionally called a Malthusian population, but the term is ambiguous in view of its sociological connotations (see 906-1).
703
It can be shown that when a
closed population (
701-4) is subjected to constant
age-specific fertility and
mortality rates (
631-8;
412-1) for a sufficiently long period of time, its annual rate of increase will tend to become constant. This constant rate of increase is called the
intrinsic rate of natural increase1, and a population which has reached this stage is called a
stable population2. The proportion of persons in different age groups in such a population will be constant, i.e., the population will have a
stable age distribution3. This stable age distribution is independent of the
initial age distribution4 and depends only on the fertility and mortality rates that are kept constant. Human populations never reach exact stability in practice, as fertility and mortality rates constantly change, but the computation of a stable population as a model and of its intrinsic rates may provide an index of the
growth potential5 of a set of age-specific fertility rates applied to a non stabilized age structure. Related to the growth potential, the moment of inertia of a population or
demographic momentum11★ should be mentioned: it refers to the dynamics hidden in the age structure due to a delayed growth response caused by the biological fact that from the time of birth of a
cohort (
116-2) to the beginning of their period of
fertility (
620-1) a certain amount of time passes. A population may for this reason still grow, even though the birth rate drops long ago. The reverse case is also possible. The momentum is particularly altered in case of discontinuity in the evolution of births (during wars for example) and abrupt reversals of trends. A stable population in which the intrinsic rate of natural increase is zero is called a
stationary population6. In such a population the numbers in a given age group are equal to the integral of the
survivorship function (
431-3) of the life tables taken between the upper and lower age limits of the group, multiplied by a factor of proportionality common to all age groups. A
quasi-stable population7 is a formerly stable population with constant fertility and gradually changing mortality; characteristics of this type of population are similar to those of
semi-stable populations8★ which are closed population with a constant age structure. A
logistic population9 is a population growing in accordance with the
logistic law10 of growth, i.e., a population in which the growth rate decreases as a linear function of the population already alive and which will tend asymptotically to an upper limit.
- The intrinsic rate, also called by its inventor Lotka, the true rate of natural increase, is equal to the difference between the intrinsic birth rate (or stable birth rate) and the intrinsic death rate (or stable death rate).
- Stable, adj. - stability, n. - stabilize, v.
Stable population analysis uses the properties of stable population models to estimate various characteristics of real populations.
- Stationary, adj. - stationarity, n.
⁂
710
The study of
reproduction1 (see §
116) or
population replacement1 is concerned with the natural process through which a population replaces its numbers. The theory behind treats population as a
renewable resource2 in the mathematical sense of the term. A distinction is drawn between
gross reproduction3 or
gross replacement3, where no account is taken of mortality before the end of the reproductive period (
620-1), and
net reproduction4 or
net replacement4, in which this mortality is taken into account.
- Also reproductivity. For another sense of reproduction see 601-2.
711
In this study of replacement a number of indices,
replacement rates1 or
reproduction rates1 are used. Reproduction rates are generally
female reproduction rates2 or
maternal reproduction rates2. The female
net reproduction rate3 is defined as the average number of live daughters that would be born to a hypothetical female
birth cohort (
116-2) which would be subjected to a set of current
age-specific fertility (
631-8) and
mortality rates (
401-2). A female
gross reproduction rate4 is computed similarly on the assumption that mortality before the end of the reproductive age is zero.
Male reproduction rates5 or
paternal reproduction rates5 can be computed analogously using male births and a male birth cohort, and certain types of
joint reproduction rates6 which take both sexes into account have been proposed. Where the experience of an actual cohort is used in the construction of reproduction rates,
cohort reproduction rates7 or
generation reproduction rates7 are obtained. The mortality and the fertility rates used in the construction of these rates will refer to different periods of time. Where statistics of fertility by age are not available, the so-called
replacement index8 may be used. This ratio relates the quotient of the population of children of a given age (as a rule those 0-4 years) to the number of women of childbearing age in the actual population, to the corresponding quotient in the
stationary population (
703-6).
712
Other replacement indices are also computed. For instance, the net reproduction rate is sometimes split into a legitimate component1 and an illegitimate component2. Again, a nuptial reproduction rate3 has been computed, showing the number of legitimate daughters that will be born to a newly-born female if current rates of mortality, fertility, nuptiality and dissolution of marriage remain unchanged. Generally such rates are for females, but it would be possible to compute analogous rates for males.
713
The
net reproduction rate (
711-3) and the
intrinsic rate of natural increase (
703-1) are closely related to one another. The net reproduction rate measures the increase in the
stable population (
703-2) implied by the given age-specific fertility and mortality rates over a period equivalent to the
mean length of a generation1 or the
mean interval between successive generations1. This length of a female generation is equal to the
mean age of mothers2 giving birth to live daughters, with current age-specific fertility and mortality rates. Period reproduction rates are current indices (cf.
152) which relate to
hypothetical cohorts3 or
synthetic cohorts3.
- The mean age of fertility, i.e., the mean age of the fertility schedule is only approximately equal to the mean length of a generation. The mean length of a male generation similarly is equal to the mean age of fathers at the birth of their children.
⁂
720
Population projections1 are calculations which show the future development of a population when certain assumptions are made about the future course of population change, usually with respect to fertility, mortality and migration. They are in general purely formal calculations, developing the implications of the assumptions that are made. A population forecast2 is a projection in which the assumptions are considered to yield a realistic picture of the probable future development of a population. Although the projection period3 is variable, short-term forecasts4 are the rule, as the margin of error to which forecasts are subject increases considerably as the length of the forecast’s period increases. The most frequently used method of projection is the component method5 or cohort-component method5 which takes the population distributed by age and sex at a base date6 and carries it forward in time, cohort by cohort, on the basis of separate allowances for fertility, mortality and migration. When matrix algebra is used for component projections, the method is sometimes called matrix method of projection7.
- Projections are also made in terms of educational, economic and social characteristics. Backward projections which might be more accurately called retrojections, use similar methods to trace the past evolution of the population.
721
Estimates of the population1 by size and composition at various dates in the past and present may be made by various methods, including many of the methods used for
population projections (
720-1).
Demographic estimates2 include estimates of the population and of such characteristics as
fertility (
601-1),
mortality (
401-1), etc. The
annual extrapolation of population5★ from the last census is carried out on the basis of the last census and vital statistics in subsequent years.
Intercensal estimates3 relate to dates intermediate to two or more
censuses (
202-1), and take the results of these censuses into account. The
error of closure4 is the difference between the size of a population enumerated at a new census and the population estimated for that census date on the basis of a previous census, the excess of births over deaths, and
net migration (
805-2) during the intercensal period. This difference represents the balance of errors in the data on births, deaths, net migration, and the coverage of the two censuses.
- Postcensal estimates take the results of a previous census into account, but not those of the next census.
⁂
730
A
demographic model1 consists of a theoretical construct representing the evolution of a population (of individuals, couples, families, households, etc.) and its structure on the basis of its initial state and the effect of various demographic variables (such as fertility, fecundability, mortality, etc.). In a
static model2, these variables remain constant; in a
dynamic model3, they are allowed to change over time. A further distinction is made between
deterministic models4 which assign functional relations between definite values of the variables, as if the studied population were infinitely large, and
stochastic models5 or
probabilistic models5 which consider the probability of various events occurring to individuals over the duration of the process under study. The model may be set out in mathematical formulas or take the form of a
simulation6 where specific values of the variables are included in a system of relations.
Macrosimulations7 may for example involve population projections made by the
component method (
720-5). In
microsimulations8, events are made to occur randomly to individuals or groups over time according to sets of probabilities assigned to the variables in the model.
- The word is also used as an adjective in such expressions as model tables.
Chapter 8 • Spatial mobility
801
The study of
spatial mobility1 or
geographic mobility1 is concerned with the quantitative aspects of
moves2 made by individuals in geographic space. The distinguishing characteristic of
migration3 is that it involves a change in
usual place of residence (
310-6*) and implies movement across an administrative boundary. The administrative unit left by the migrant is the
place of origin4 or
place of departure4; the unit to which the migrant goes is the
place of destination5 or
place of arrival5. The concept of migration is often not applied to moves made by persons without a fixed place of residence, for example,
nomads are excluded from the count of migrants in many countries. In practice it is sometimes difficult to distinguish between migration, which implies a relatively permanent change of residence, and
temporary moves6, except on the basis of criteria of
length of absence7 from the place of origin or
duration of stay8 at the place of destination. In general, geographic mobility does not include short-term trips which involve no change of usual residence, even though such moves may deserve study because of their economic and social importance.
Commuting9 involves the daily or weekly journey from place of residence to place of work or schooling;
seasonal moves10 have a yearly periodicity.
Transits11, which are moves across a territory to reach a destination, do not involve migration with respect to the territory crossed.
Tourist traffic12 or
vacationing12 also are not included in geographic mobility.
- Spatial mobility is distinguished from social mobility (920-4) and occupational mobility (921-3).
- Migration, n. - migrate, v. - migrant, n.: one who migrates, also used as adj. - migratory, adj.: pertaining to migration. The term migration refers to a process and cannot serve in English (in contrast to French) to describe a particular move; it is rarely used in the plural. Some authors view all residential mobility (803-6) as migration. For most, however, migratory moves involve the crossing of a boundary, and the administrative unit selected is called the migration defining area.
- The terms country of arrival and country of reception are appropriate when international migration is the subject of interest.
- Commute, v. - commuter, n.: one who regularly travels from his place of residence to his place of work. The expression journey to work is also used to describe this type of movement.
- Seasonal movement is more accurate than the frequently used term seasonal migration since these moves rarely involve a change of usual residence.
802
When migration is observed over time, it is convenient to compare the place of residence at a fixed past date1 or the place of last previous residence2 with the place of current residence3. An individual whose administrative unit of residence differs at the beginning and end of a certain interval is identified as a migrant4. Migrants may be classified as emigrants5 or out-migrants5 with respect to their place of origin and as immigrants6 or in-migrants6 with respect to their place of current residence. When a census or survey has included a question on previous place of residence2, the information generated concerns in fact the latest migration7 or latest change of residence7, whatever its date. A migrant is any individual who has had at least one prior residence in a different administrative unit from his or her current residence; such an individual can be considered to have migrated into8 the current residence, and migrated out9 of the previous one. A lifetime migrant11 is a person whose place of birth10 was in a different administrative unit from his or her current residence. In specific cases, migrants can be qualified as emigrants for political, religious or ethical reasons12★, or immigrants for political, religious or ethical reasons13★.
- Strictly speaking, under this concept a migrant must have been born before the beginning of the migration defining interval and must survive until the end. This definition is sometimes extended to include children born during the interval who are allocated to the place of residence of their mother at the beginning of the interval. The number of recorded migrants is not necessarily equal to the number of moves which occurred during the interval for these individuals, as any one may have moved several times in the interval, or even have returned to his previous place of residence by the time of the census or survey.
- Usually the place of birth is defined as the place of usual residence of the mother at the time of the birth even though custom or the location of medical facilities may have resulted in the birth occurring elsewhere.
803
The population of a
sovereign country (
305-3) may be involved in
internal migration1 when both
place of departure (
801-4) and
place of destination (
801-5) are within the country, or in
international migration2 which occurs across national boundaries. The term
external migration3 is sometimes encountered in the latter sense. International migration is called
immigration4 or
emigration5 according to whether the country in question is the country of destination or the country of origin. When the country is divided into sub-areas, movement within the boundaries of each sub-area are
local moves6 and constitute
residential mobility6, while movement between sub-areas is called
in-migration7 or
out-migration8 depending on whether the sub-area considered is the place of destination or the place of origin for the migrants. A
migration stream9 is a group of migrants having a common origin and destination. The larger stream between two sub-areas is called the
dominant stream10 and the smaller the
counterstream11.
- The definitions of migration in this paragraph can be extended to the migrants involved. The distinction between internal and international migration is not always precise when territories within a country are more or less autonomous.
- Simple commuting across a national border receives the name of border traffic, and should not be mistaken for international migration.
- Immigration, n. - immigrate, v. - immigrant, n. and adj.
- Emigration, n. - emigrate, v. - emigrant, n. and adj.
804
When an individual migrates several times during a certain period, his or her moves may be distinguished according to the order of migration1. The duration of residence2 or duration of stay2 refers either to the interval between the arrival in a place and the subsequent departure for another destination or to the interval since the most recent move. Return migration3 involves movement back either to the initial area, or to any previous place of residence. Repeat migration4 or chronic migration4 refers to a tendency to migrate several times over a relatively short time interval. Rural-urban migration5 sometimes takes the form of serial migration6, stage migration6 or step migration6, as migrants tend to move to large cities as a final place of destination by a series of shorter, intermediate migrations to cities or areas of successively larger size. The serial migrations7★ between a series of cities of different sizes is sometimes used when net migration of each city is positive and results from an excess of immigration from the rural sector and smaller cities over emigration to the larger cities.
- Individuals involved in return migration are called return migrants.
- When repeat migration involves moving to new areas, some authors talk of secondary migration and of secondary migrants, in contrast to primary migration which involves first order or primary migrants. This is a source of confusion, since these terms usually take the meaning of 806-4.
805
The contribution of
migration (
801-3) to overall
population growth or
population growth due to migration1★ (
701-1) is due to
net migration2, i.e., the difference between the number of
arrivals3 and the number of
departures4. Net migration can have a negative or a positive sign;
net immigration5 or
net in-migration5 is used when arrivals exceed departures, and
net emigration6 or
net out-migration6 when the opposite is true. The sum of arrivals and departures in a country can be used to measure the
volume of migration7. A similar concept, applied to sub-areas of a country, is the migration
turnover8. The
net stream9 or
net interchange9 of migration between two areas is defined as the difference between the
stream (
803-9) and the
counterstream (
803-11), whereas the
gross interchange10 is the sum of stream and counterstream.
- This may also be called the balance of migration or the migration balance. Terms such as "net migrant" should be avoided, and phrases such as the net number of migrants should be preferred.
806
Spontaneous migration1,
voluntary migration1 or
free migration1 is the result of the initiative and free choice of the migrants. In the absence of concerted action, the movement is referred to as
individual migration2. When entire families are moving together, the term
family migration3 is sometimes encountered.
Secondary migration4 or
ancillary migration4 is induced by the movement of others, as when children follow the head of the family. An example of such migration is
family reunification9★, which pertains to the migration of family members, including children, of the family head. The movement of workers or of members of the labor force in response to employment opportunities is referred to as
labor migration5. Moves occurring as a result of marriage and when individuals retire from the labor force are sometimes referred to respectively as
marriage migration6 or
retirement migration7.
Chain migration8★ or
linked migration8★ refers to a pattern of migration to specific places of destination, where a prospective migrant has a
relative (
114-3*) or friend who has established a residence and is willing to provide information and support.
- Although the terms are sometimes used in a different sense (cf. 804-4*), a primary migrant is the person who makes the actual migration decision while a secondary migrant is an individual such as a young child whose migration is the result of another person’s decision.
807
Where groups of individuals or families decide to migrate together collective migration1 or group migration1 will result. Mass migration2 involves a very large number of migrants. The term exodus3 may be used for a sudden mass migration caused by some emergency or catastrophe.
808
Voluntary migration (
806-1) contrasts with
forced migration1, in which individuals are compelled by public authorities to move.
Repatriation2 applies to forced return of individuals to their country of origin. Another example of forced migration is the
expulsion3 from their places of abode either of individuals or of whole groups of people. The term
evacuation4 is generally reserved for the movement of whole populations in order to safeguard them from some catastrophe, such as earthquakes, floods, operations of war or the like. A
refugee5 has usually migrated on his own volition, though there may have been strong pressure on him to migrate because his continued stay in his country of origin may have exposed him to danger of persecution. A
displaced person6 is a person who has been moved by a public authority from his place of origin. This move may have taken place as a result of large-scale
displacement of population7 or
population transfer7, or
population exchange8.
- Repatriation, n. - repatriate, v.
- Expulsion, n. - expel, v - expellee, n., one who has been expelled. The term deportation is used for expulsion of an individual person from his country of residence because his continued residence is considered undesirable by the authorities. Deportation, n. - deport, v. - deportee, n.
- Evacuation, n. evacuate, v, - evacuee, n., a person who has been evacuated.
809
The process by which immigrants adjust themselves to conditions in the area of destination falls into several categories:
naturalization (
331-1), the acquisition of legal citizenship;
absorption1 the entry into productive economic activity;
assimilation3, integration into the social structure on terms of equality; and
acculturation2 the adoption of the customs and values of the population in the place of destination.
810
When immigrants from a particular territory do not assimilate in their new country but retain the customs of their
place of origin (
801-3), they are called a
colony1. When the receiving country is already inhabited, this raises problems of
coexistence2 between different populations. These may be solved by the
fusion3 of the populations, i.e. by the disappearance of recognizable differences, or by the
integration4 of one of the populations into the other.
Segregation5 exists in a territory where two or more populations live but remain separated by barriers imposed by custom or by the force of law.
- Colony, n. colonize, v., to found a colony, also used in the sense of settling a new territory - colonist, n., member of a colony.
- Coexistence, n.-coexist, v.
- Segregation, n. - segregate, v.
In extreme cases, the conflict may result in genocide, i.e. an attempt by one population to exterminate the other. Exterminate, v. - extermination, n.
811
Migration policy1 is one aspect of
population policy (
105-2). Most countries through their
immigration laws2, restrict the admittance of foreign nationals. These laws frequently provide for
selective immigration3 of persons with certain specified characteristics. Some countries have established
quota systems4 whereby the number of immigrants is fixed in relation to the
national origin5. Measures designed to influence the
redistribution of population6 within a country through
internal migration (
803-1) are usually more indirect in character.
⁂
812
Migration statistics1 are compiled to reveal the volume of migration, the direction of migratory movement and the characteristics of migrants. The accuracy with which each of these kinds of facts is ascertained depends upon the method of compilation, as most migration statistics consists of approximations and estimates rather than precise measurements.
Direct measurement of migration2 requires a system of recording movements as they occur. The most complete migration statistics are developed from population registers in which all changes of residence are recorded. They allow measurement of internal and of international migration, but are more satisfactory for the former than for the latter. In countries where these population registers do not exist, a certain number of administrative record systems which do not cover the entire population can be used for particular purposes. Thus,
voter registration records3,
social security records4 tax-payers records5 or
dwelling records6 may yield information on internal migration. In the case of overseas migration, statistics may be based on
passenger lists7 or
manifests7 of ships and aircraft. Counts of persons crossing a political frontier yield only very crude data; most of all in areas with much
frontier traffic (
803-2*) special steps must be taken to distinguish migrants from
travellers8, who do not change their place of residence, and persons in
transit 801-11). The number of
visas9 or
entry permits9 granted and the number of
residence permits10 or
labor permits11 issued may also be used as an indication of the migration of foreign nationals.
- Traveller, n. - travel, v. - travel, n.: the process of travelling.
- In certain countries residents who wish to travel abroad are required to obtain exit permits or exit visas, records of which may serve as a source of information on migratory movements.
813
Information collected in censuses and surveys allows the development of statistics on migrants1. Depending on the questions asked, these usually include statistics on in-migrants2, statistics on out-migrants2 and place-of-birth statistics3. This approach has limits for the study of international migration; emigrants cannot be studied, whereas immigrants are known, whatever their country of origin.
814
Where it is not possible to determine migration directly, indirect estimates of net migration may be obtained by the
residual method1 or
method of residues1 in which the change in population between two dates is compared with the change due to natural growth; the difference between the two figures is attributed to migration. The
vital statistics method2 consists of computing the difference between total population change, as assessed from two censuses, and
natural increase (
701-7) during the intercensal period. The
survival ratio method3 is commonly used to estimate net migration by age; it does not require actual death statistics.
Survival ratios may be derived either from life tables or from the comparison of successive censuses, and they are applied to a sub-population in one census to give expected numbers by age at the time of the other census. A comparison between the observed and the expected population may be used to estimate the balance of migration by age for the subpopulation. When
place-of-birth statistics4★ (
813-3) by age and current residence are available in two consecutive censuses, it is possible to make indirect estimates of migration streams.
- The equation showing that the difference between total population change and natural increase is equal to migration has sometimes received the name of balancing equation. In order to use it for the estimation of net migration, one must assume that omissions (230-3) and multiple countings (230-5) are equal for both censuses.
- The major variants of this procedure are called the life table survival ratio method and the national census survival ratio method. In the forward survival ratio method, the population at the beginning of an intercensal period serves to estimate the expected population at the end of the period, and the procedure is reversed in the reverse survival ratio method; the average survival ratio method combines these two approaches.
815
The generic term migration rate1 refers to any rate which measures the relative frequency of migration within a population. Unless indicated otherwise these rates should be taken as annual migration rates2. They may be obtained as the ratio of the average annual number of movements during a certain period, to the average population of the period. An annual rate of net migration3 and an annual rate of total migration4 are calculated in a similar fashion by using the appropriate information on net and total migration. An index of migration effectiveness5 or effectiveness index5 is calculated as the ratio of net migration to total in- and out-migration. The range of the index is from zero, when arrivals and departures are equal in number, to one, when migration is entirely one way.
- Other denominators may serve to compute the rate, such as the population at the beginning or the end of the period, or the number of person-years lived by the population of the area.
- Also: Index of migration efficiency or efficiency index.
816
Proportions of migrants1 can be obtained by relating the number of migrants during a period to the population to which or from which they are migrating. When the
proportion of out-migrants2 is obtained by dividing the number who reported moving out of the area by the population residing in the area at the beginning of the period and alive at the end, this index measures the probability of moving for the population at risk, and among other uses, it can be used in the preparation of population projections where migration is accounted for separately. But other populations are often used in practice as denominators to compute proportions of migrants. Similarly, the
proportion of in-migrants3 is sometimes obtained by dividing the number of in-migrants in an area during a period, by the population of the area at the end of the period; but the denominator could also be the population at the beginning of the period, or the average of the beginning and end populations. The
proportion of lifetime in-migrants4 can be derived from information on the place of birth, dividing the number of persons born out of the area by the enumerated population of the area. The
proportion of lifetime out-migrants5 can be obtained by dividing the number of persons in a country living outside of their area of origin, either by the total number of persons born in that area, or by those among them who still live there. When such characteristics of the migrants as
age (
322-1),
occupation (
352-2) or
level of education (
342-1) are known,
indices of migration differentials6 are used to contrast the migrants and the rest of the population of destination. The index is equal to the quantity 1 minus the ratio of the proportion of migrants in the population having the characteristic studied to the proportion of migrants in the whole population. The index of migration differentials is equal to zero when the population with the given characteristic has the same migration behavior as the rest of the population. The term
selectivity of migration7 indicates that the comparison is between the in-migrants and the population from which they were drawn, at the area of origin (
801-4). When comparing the characteristics of the in-migrants to those of the population at the place of arrival (
801-5) the term
differential migration8★ or
migration difference8★ is sometimes used.
- For example, the selectivity of migration from Mexico was decreasing because differences in characteristics between migrants and nonmigrants fade over time; also the origins of Mexican immigrants was increasingly diverse because of the spread of Mexican migration networks in the USA.
817
Longitudinal migration analysis1 requires information on the successive moves of an individual over time, information which is normally available only from
population registers (
213-1) or
retrospective surveys (
203-8). Several refined measures of migration are available from this type of data, such as a
first migration probability2, defined as the probability that a group of
non-migrants3 aged x will be involved in migration for the first time before reaching age x + n . These probabilities can be used to calculate a
non-migrant table4. The latter, when combined with a
life table (
432-3) will lead to a double decrement
survivorship schedule of non-migrants5. Similarly,
migration probabilities by order of move6 can be computed, as well as the proportion of migrants of a given order who have not gone on to make a subsequent move within a certain migration defining interval. The
all orders migration rate7 is the ratio of moves of all orders in a year to the average population size of the
cohort (
117-2) over the year. The cumulation of these rates for a cohort up to a given date provides an estimate of the
mean number of moves8 in the absence of mortality. A survivorship schedule can be combined with an age-specific
all orders migration table9 to estimate the average number of remaining moves for an individual of a given age, given the prevailing mortality.
818
In studying migrants between two areas during a period, one commonly used measure is the
index of migration intensity1, obtained by dividing the number of migrants from area A to area B by the product of the number of inhabitants in B at the end of the period, and the number of inhabitants of A at the beginning of the period who are still alive at the end. This index, divided by the ratio of the total number of migrants to the square of the population of the country, yields a
migration preference index2. When the numerator is restricted to the net stream of migration, the resulting measure is called an
index of net velocity3. The
effectiveness of migration streams4 is measured by relating the absolute value of the net migration stream to the
gross interchange (
805-10).
- This index can be interpreted as the probability that two individuals alive at the end of the period selected randomly, one among those residing in area A at the beginning of the period, and the other among those residing in B at the end of the period, will be identical. The availability of data may impose various other denominators.
819
Migration models1 fall in two broad categories. The first relates
migration streams (
803-9) between two areas to social, economic or demographic variables. These variables are often classified as
push factors2 when they characterize
repulsion2 from the area of origin, as
pull factors3 resulting in
attraction3 to the area of destination, and as
intervening obstacles4 between the two areas. The simplest of these models are
gravity models5: the streams between the two areas are directly proportional to the size of their population, and inversely proportional to the
distance6 between them, raised to a certain power. Other models consider that the streams are proportional to the opportunities in the area of destination, and inversely proportional to
intervening opportunities7 between origin and destination. Models in the second broad category are
stochastic models (
730-5) and refer to individuals rather than to populations; they link the probability of migrating to a certain number of personal characteristics such as age or the previous history of migration.
- Or Pareto-type models.
- Distance can be measured in diverse ways: a straight line, the route, the number of intervening areas, etc.
Chapter 9 • Economic and social aspects of demography
901
A part of
population theory (
105-1) is concerned with the social and economic determinants and consequences of population trends. The theoretical treatment of population was largely centered in the past on the relation between total population and
resources1, i.e., the means available to maintain the population, or
production2, the creation of goods and services. More recently, the emphasis has shifted to the interrelations between
population growth (
701-1) and its components, and
economic growth (
903-1), particularly with respect to
consumption3,
saving4,
investment5 and
labor market6★.
902
Consideration of the relations between population size and resources leads to the concepts of overpopulation1 and underpopulation2. These terms are defined only at a given fixed level of development3. When neither a larger nor a smaller population would yield advantages, there is said to be an optimum population4, sometimes briefly called an optimum4. The advantages yielded may be economic in character and in that case it is an economic optimum5. The discussion of economic optima generally proceeds in terms of economic welfare but, as this is difficult to ascertain empirically, the level of living6 or standard of living6 is sometimes substituted. This is approximated by the real national income per capita7 i.e., the total amount of goods and services produced in a particular period (or its equivalent in money income adjusted for variation in purchasing power) divided by the total population during the period.
- Overpopulation, n. - overpopulated, adj.
- Underpopulation, n. - underpopulated, adj.
- Some writers have used the concept of a power optimum and a social optimum as well as of an economic optimum.
- The expression "standard of living" is restricted by some economists to mean an accepted goal or recognized set of needs, as constrasted with the level of living actually attained. Others use these terms interchangeably.
- Other measures such as the gross national product per capita, are also used. "Per capita", although grammatically incorrect, is used in place of the expression "per head".
903
Economists have emphasized the dynamic relations between economic growth1 or economic development1 and rates of population growth and changes in population structure; they are less interested today in the static concept of an optimum size, than in the dynamic concept of the optimum rate of growth2 of population, i.e., the rate of growth which will be consistent with the maximum rate of increase of the level of living. These relations are of particular concern in countries with a low level of living, which have come to be called less developed countries3 or developing countries3.
- Also: underdeveloped countries or low-income countries. They are commonly contrasted with the developed countries, or more developed countries.
904
The maximum population1 of a territory, sometimes called its carrying capacity1, is generally understood in an absolute sense to mean the largest number of persons that could be sustained under specified conditions; but is sometimes used to denote the largest number that could be supported at an assumed standard of living. Conversely, the minimum population2 is generally taken to be the smallest number of persons in an area which is consistent with group survival3.
905
The term
population pressure1 is linked to concepts relating the size of the population and the
resources (
901-1) available. To say that this pressure is strong or weak in a certain area is to suggest that the population of the area is near or far from the maximum consistent with the resources which are available. According to
Malthusian population theory2, so called after its originator, Thomas Malthus, there will inevitably be pressure of population on the
means of subsistence3. Any change in the volume of available means of subsistence would generate
population growth (
701-1) until
population equilibrium4 would again be attained when the level of living had reached a
subsistence level5, i.e., a level just sufficient to maintain life. The equilibrium would be maintained by the elimination of any
surplus population10★ either through
positive checks6, sometimes known as
Malthusian checks6 (famine, pestilence and war), or through the
preventive check7 of
moral restraint8 consisting of
postponement of marriage9, coupled with abstinence from sexual relations before marriage.
- and 7. The terms positive check and preventive check in English are generally used only with reference to the doctrines of Malthus.
906
Although the term
Malthusianism1 originally refers to the theories of Malthus, it is often used today to denote the doctrine that a check in the rate of population growth is desirable.
Neo-Malthusianism2, whilst accepting the desirability of checking population growth, advocates that such restriction should be achieved through the use of
birth control methods (
627-3).
- Malthusianism, n. - Malthusian, adj.: conforming to the doctrines of Malthus. The terms are sometimes used mistakenly to refer to the advocacy of family planning programs to solve economic problems.
907
The process of transition from a situation in which both fertility and mortality were relatively high to one in which they are relatively low which has been observed in many countries, is called the demographic transition1 or population transition1. In the process of moving from a pre-transitional stage2 to a post-transitional stage3, there is typically a lag between the declines of mortality and fertility, so that a stage of transitional growth4 of population results. Economists have studied changes in productivity5, i.e., production per member of the labor force, or per head of the population, associated with this transitional period.
- Sometimes called the vital revolution. A further distinction is made between the fertility transition and the mortality transition. The theory of the demographic transition associates historical changes in vital rates with socio-economic transformations attending the process of industrialization and urbanization.
⁂
910
In eugenics1, a discipline which seeks to improve the quality of the population, attention is directed primarily to the role of heredity2, the transmission of hereditary characteristics3, such as the color of the eyes, from generation to generation. Acquired characteristics4 are not so transmitted. A lethal characteristic5 generally brings about the early death of the foetus.
- Eugenics, n. - eugenic, adj. - eugenist, n.: a specialist in eugenics.
- Heredity, n. - hereditary, adj.
911
The transmission of hereditary characteristics operates through
genes1 which are transmitted to children by their parents.
Genetics2 is the science concerned with the transmission and effects of hereditary factors. The genes are carried by
chromosomes3 which are long filaments of DNA (deoxyribonucleic acid) located in the cell’s nucleus. The position of a gene on a chromosome is called its
locus4. Genes occupying the same locus affect the same characteristic, although they do so in various ways which correspond to various
alleles5 of the gene in this locus. The new cell formed by the union of two sexual cells or
gametes6 during the process of
conception (
602-1) is called a
zygote7.
- All of the genes carried by an individual are collectively called his or her genetic endowment.
- Genetics, n. - genetic, adj. - geneticist, n.: a specialist in genetics.
912
The set of two genes of an individual at the same locus is called a genotype1; the genotype is said to be homozygous2 if the alleles are identical at a given locus; it is said to be heterozygous3 in the opposite case. The phenotype4 consists in the observable characteristics as determined by the genotype and the environment. If an heterozygous individual (AA’) cannot be distinguished from an homozygous individual (AA), the allele A is said to be dominant5 over allele A’, and A’ is said to be recessive6. Genes are subject to sudden and apparently random changes, called mutations7. Panmixia8 or random mating8 insures uniform distribution of genes within populations.
- Mutation, n. - mutant, adj. or n.
913
A distinction is frequently made in eugenic policy between
positive eugenics1, aimed at increasing the number of persons believed to have desirable characteristics, and
negative eugenics2 aimed at restricting the reproduction of persons expected to transmit undesirable characteristics or
hereditary defects3. Much attention has been given to the discussion of
eugenic sterilization4, i.e., the sterilization of persons likely to transmit undesirable characteristics to their descendants. Objections to this measure have been raised on moral grounds and also because of its relatively low efficiency in reducing the frequency of
recessive genes (
912-6). Among the measures proposed,
pre-marital examination5 may be mentioned; this is designed to give couples intending to marry information about the probable quality of their offspring, so that prospective partners to
dysgenic marriages6, i.e., those likely to produce defectives, may be warned.
914
The probability that an individual of reproductive age will have a given number of offspring who also attain reproductive age may depend on his
genotype (
912-1). This differential reproduction is called
selection1. The
selective value2 or
fitness value2 of a genotype is the relative number of children of individuals with the genotype who survive to reproductive age. The
mean selective value3 or
fitness3 of a population is equal to the average of the selective values for the genotypes of its members. The
genetic load4 of the population is the relative decline in the mean value of fitness resulting from the presence of different genotypes with varying fitness values. Random fluctuation of the frequency with which a specific gene is found in different generations of a population is called the
genetic drift5. The
gene structure6 of a population refers to the distribution of the frequencies of different
alleles (
911-5) on a given
locus (
911-4) within the members of the population. The
genotypic structure7 of a population refers to the distribution of different genotypes on the same locus.
915
In the case of an inbred individual, i.e., an individual whose parents have a common ancestor, two genes are said to be identical genes1 by descent, if both were carried by the same ancestor and are on the same locus. The probability that an individual chosen at random in a population carries two genes identical by descent is the coefficient of inbreeding2 of the population. The coefficient of kinship3 of a population is the probability that two individuals chosen at random in that population carry genes identical by descent on the same locus.
⁂
920
In many studies, the population is divided into a number of social status groups1 or into socioeconomic groups1 according to occupation, income, education or similar indices of economic status. The term social class2 has a sociological connotation which is only approximated by the type of grouping generally used in demographic work. The division of society into a number of such groups is called social stratification3. Movement between different social status groups is called social mobility4; a distinction is made between upward mobility5 and downward mobility6 in the social hierarchy. The mobility of children with respect to their parents’ social class is called inter-generational social mobility7.
- A caste is a closed social group in which social status and position in the social hierarchy are ascribed.
- Social mobility by an individual in his or her own lifetime is called intra-generational social mobility.
921
Labor mobility1 is the general term that covers not only an individual’s changes of occupation2 under the name of occupational mobility3 but also job mobility4, or changes of employer, and industrial mobility5, or changes of industry.
922
Interest in the problems of
aged persons (
324-8) and
aging (
326-3) has given rise to a special branch of studies called
gerontology1 including the special branch of medicine called
geriatrics2.
- Gerontology, n. - gerontological, adj. - gerontologist, n.: a specialist in gerontology.
- Geriatrics, n, - geriatric, adj. - geriatrician, n.: a specialist in geriatrics.
⁂
930
A
population policy (
105-2) is a series of measures taken by public authorities to influence the trend of population change, or principles offered as a basis for such measures. A distinction is made between
populationist1 policies designed to increase the population, to accelerate its rate of growth or to check actual or incipient population decline or
depopulation2, and
population control3 policies for the purpose of checking population growth or reducing the rate of population increase. Among the former,
pronatalist4 policies, which attempt to increase the
birth rate (
332-1), are particularly important. In contrast to pronatalist policies, there are
antinatalist5 policies, which are designed to reduce the frequency of births. Population policy may also include a component of
population redistribution6 policy designed to influence the territorial distribution of population, as well as a component of
migration policy7★.
Health policy8★, which aims to reduce
morbidity (
420-1) and
mortality (
401-1), is an other component of
population policy.
- Also called Malthusian policies. See 906-1.
931
In many countries allowances1, benefits1 or grants2 are given to the parents of children. In general an allowance is a sum of money which is paid periodically, whereas a grant is paid on a single occasion only. Family allowance3 or children’s allowance3 denotes a sum of money paid regularly to parents with a specified number of children. In many fiscal systems, tax rebates4 are granted in respect of dependent children. Other monetary benefits paid in some countries include maternity grants5 or birth grants5 which are paid upon the birth of a child, pre-natal allowances6 paid to expectant mothers during pregnancy, and on occasion marriage loans7 granted to newly-married couples in order to assist them in setting up a household.
932
Many other public measures, such as housing programs or measures in the field of
public health1, may have an impact on demographic phenomena. The provision of services for pregnant women such as
pre-natal clinics2 and for
parturient (
603-4*) women may help in reducing
late foetal, infant and maternal mortality (cf.
410,
411,
413, and
424-5). Services which are primarily designed to help the mother are called
maternity services3; those meant to assist the child are
infant welfare services4 or
child welfare services4.
933
Population programs1 designed to reduce fertility in developing countries have included family-planning education2 and family-planning services3, either alone or in association with health programs4 and social welfare programs5, particularly maternal and child health programs6 designed to reduce mortality. Some countries have attempted to resort to incentives7 and disincentives8 of various kinds to elicit the motivation to use family limitation; social pressures9 and legal sanctions10 against disapproved fertility behavior are also encountered.The English term "Population Education11★" is used untranslated in some countries, especially Germany. In this specific context, it refers to the dissemination of information (in schools and other contexts) about the impact of individual reproductive behavior on broader society.
Index
A
- abode
person of no fixed — (310-8)
- aboriginal (332-2)
- aborigines (332-2*)
- abort (603-5*)
- abortifacient (603-5*)
- abortion (603-5)
- criminal — (604-5)
- illegal — (604-5)
- induced — (604-2)
- intentional — (604-2)
- legal — (604-4)
- probability that a pregnancy results in an — by age and marital status ★ (640-6)
- spontaneous — (604-1)
- therapeutic — (604-3)
- abortion by cutterage (604-6)
- abortion by dilatation and curettage (604-6*)
- abortion by dilatation and evacuation (604-7)
- abortion by medical induction procedure (604-9)
- abortion by saline injection (604-9*)
- abortion by vacuum aspiration (604-7)
- abortion rate (640-1)
- age-specific — ★ (640-4)
- life-time — (640-3)
- abortion rate by age and marital status ★ (640-5)
- abortion ratio (640-2)
- abortionist (603-5*)
- abortions by suction (604-7*)
- abridged life table (435-2)
- absence (205-7*)
- length of — (801-7)
- absent (205-7*)
- absentee (205-7)
- temporary — (310-4)
- absolute frequency (144-2)
- absolute number (131-3)
- absorption (809-1)
- abstain (627-4*)
- abstinence (627-4)
- periodic — (628-4)
- acceptance rate (626-4)
- acceptor
proportion of new acceptors (626-4)
- accession to the labor force (361-2)
- age at — (362-2)
- first — (362-1*)
- mean age at — (362-4)
- rate of — (361-5)
- accession to the labour force
probability of — (361-6)
- accident (422-3)
- accidental (422-3*)
- account
worker on own — (353-4)
- acculturation (809-2)
- accuracy (230-1)
- accurate (230-1*)
- acknowledge (610-7)
- acquired characteristic (910-4)
- active
economically — population (350-1)
- activity
branch of economic — (357-1)
- economic — (350-3)
- gainful — (350-3)
- activity ratio (350-6)
- actual population (310-2)
- acute disease (423-9)
- adjusted infant mortality rate (412-5)
- adjusted mortality rate (403-1)
- adjusted rate (136-7)
- administrative area (302-2)
- administrative district (302-2)
- administrative unit (302-2)
- adolescence (324-1)
- adolescent (324-2)
- adolescent sterility (622-8)
- adolescent sub-fecundity (622-8)
- adult (324-5)
- adult age (324-4)
- adult mortality (414-4)
- adulterous relation (610-6*)
- afterbirth (603-4*)
- age (322-1)
- abortion rate by — and marital status ★ (640-5)
- adult — (324-4)
- combined — (520-12)
- exact — (322-7)
- fecund ages (620-1*)
- individual year of — (325-1)
- mean — (326-1)
- mental — (327-4)
- mortality of old — (414-5)
- old — (324-6)
- physiological — (327-3)
- probability that a pregnancy results in an abortion by — and marital status ★ (640-6)
- reported — (322-6)
- reproductive ages (620-1*)
- retirement — ★ (324-7)
- school — (346-6)
- school- — child (323-8)
- school- — population (346-7)
- stated — (322-6)
- age at accession to the labor force (362-2)
- mean — (362-4)
- age at death
modal (434-2)
- normal (434-2)
- age at first marriage
mean — (521-5)
- median — (521-6)
- modal — (521-7)
- age at last birthday (322-3)
- age at leaving school (342-6)
- age at marriage (520-8)
- average — (520-10)
- mean — (520-10)
- minimum — (504-1)
- singulate mean — (521-8)
- age at next birthday (322-5)
- age at separation from the labor force (362-3)
- mean — (362-5)
- age at the birth of the last child (637-10)
- age dependency ratio (358-9*)
- age difference between spouses (520-11)
- age distribution (325-6)
- initial — (703-4)
- stable — (703-3)
- age group (325-2)
- broad — (325-4)
- five-year — (325-3)
- quinquennial — (325-3)
- age group-specific rate ★ (135-2)
- age heaping (152-3)
- age misreporting (152-5)
- age of fathers
mean — (713-2*)
- age of fertility
mean — (713-2*)
- age of mothers
mean — (713-2)
- age one
probability of dying before — (412-5)
- age preference
index of — (152-4)
- age reached during the year (322-4)
- age reporting bias (152-5)
- age structure (325-6)
- age-group specific rate ★ (135-2)
- age-specific
sex- — death rate (401-6)
- age-specific abortion rate ★ (640-4)
- age-specific birth rate (633-9)
- age-specific cumulative fertility ★ (636-3)
- age-specific death rate (401-7)
- age-specific divorce rate (523-4)
- age-specific fertility rate (633-9)
- age-specific fertility rates (133-6*)
- age-specific marital fertility rate (635-3)
- age-specific marriage rate (520-9)
- age-specific mortality (414-1)
- age-specific net cumulative fertility ★ (636-6)
- age-specific rate (135-1)
- age, median ... (326-2)
- aged
middle- — generation ★ (116-7)
- aged, the ... (324-8)
- ageing (326-3*)
- agglomeration (306-1*)
- — (307-1)
- aggregate
population — (306-1)
- aggregation (306-1)
- aging (326-3)
- — (326-7)
- individual — (327-1)
- agnostic (341-6)
- agricultural laborer (356-4)
- day — (356-4*)
- fulltime — (356-4*)
- seasonal — (356-4*)
- agricultural population (359-2)
- density of — per unit of cultivable area (313-3)
- non- — (359-3)
- agricultural worker (357-3)
- non- — (357-4)
- agriculture
population dependent on — (359-2)
- ailments (420-2*)
- alien (330-2)
- resident — (331-7)
- visiting — (331-8)
- alien visitor (331-8)
- all orders migration rate (817-7)
- all orders migration table (817-9)
- allel (911-5)
- allowance (931-1)
- children's — (931-3)
- family — (931-3)
- pre-natal — (931-6)
- amenorrhea
post-partum — (620-9)
- pregnancy — (620-8)
- amenorrhoea (620-7)
- amniotic fluid exchange (604-9*)
- analysis (132-1)
- cohort — (103-4)
- cross-sectional — (103-5)
- data — (222-3)
- demographic — (103-1)
- generational — (103-4)
- longitudinal — (103-4*)
- longitudinal migration — (817-1)
- panel — (103-4*)
- period — (103-5)
- stable population — (703-2*)
- statistical — ★ (130-10)
- analyst
system — (225-9)
- analytical (132-1*)
- analyze (132-1*)
- ancestor (114-2)
- ancestral (114-2*)
- ancillary migration (806-4)
- animarum
status — (214-6)
- annual basis
converted to an — (137-4)
- annual death probability (431-2)
- annual extrapolation of population ★ (721-5)
- annual migration rate (815-2)
- annual rate (137-2)
- average — (137-3)
- mean — (137-3)
- annual rate of growth
mean — (702-2)
- annual rate of net migration (815-3)
- annual rate of total migration (815-4)
- annulment of marriage (513-1)
- anonymous statement ★ (215-9)
- anovulatory cycle (622-6)
- antinatalist (930-5)
- appliance method (628-1)
- non- — (628-2)
- apprentice (354-8)
- area (301-2)
- administrative — (302-2)
- census — (210-2)
- cultivable — (313-5)
- cultivated — (313-4)
- density of agricultural population per unit of cultivable — (313-3)
- density of population per unit of cultivable — (313-2)
- metropolitan — (307-4)
- migration defining — (801-3*)
- natural — (302-7)
- rural — (311-1)
- standard metropolitan statistical — (307-4*)
- statistical — (307-4*)
- sub- — (302-1)
- surface — (120-3)
- urban — (311-2)
- area sampling (162-7)
- arithmetic average (140-2)
- arithmetic mean (140-2)
- armed forces
member of the — (357-6)
- arrival (805-3)
- country of — (801-5*)
- place of — (801-5)
- artificial fertilization (602-2*)
- artificial insemination (602-2*)
- aspiration
abortion by vacuum — (604-7)
- assimilation (809-3)
- assistance
person receiving public — (358-7)
- associated cause of death (421-9)
- at term
birth — (605-3)
- atheist (341-6)
- attainment
grade — (342-5)
- attainment statistics
educational — (342-4)
- attempted suicide (422-5)
- attendance
pupil in — (346-3)
- attendance ratio (346-4)
- attitude
survey of knowledge — and practice (626-8*)
- attraction (819-3)
- attribute (131-6)
- attrition (432-6)
- attrition probability (135-5)
- autochthonous (332-2)
- average (140-1)
- arithmetic — (140-2)
- geometric — (140-3)
- moving — (151-5)
- weighted — (140-4)
- average age at marriage (520-10)
- average annual rate (137-3)
- average deviation (141-7)
- average duration per case (425-4)
- average family size (637-3)
- average parity (637-2)
- average population (135-6)
- — (401-5)
- average survival ratio method (814-3*)
- averted birth (626-7)
B
- baby
premature — (605-4)
- bachelor (515-3)
- back
call — (203-10)
- backward projection (720-1*)
- balance of births and deaths (701-8)
- balance of migration (701-6)
- — (805-2*)
- balancing equation (814-2*)
- bank
data — (227-2)
- banns
publication of — (505-1)
- baptism (214-2)
- baptism slip (215-2)
- baptized infant
privately — ★ (214-4)
- bar chart (155-9)
- barrier method (628-1*)
- basal body temperature method (628-6)
- base (132-8)
- data — management system (227-2)
- base date (720-6)
- baseline event (135-4)
- basic data (131-1)
- basic document (221-2)
- basis
converted to an annual — (137-4)
- bastard (610-6*)
- batch processing (227-7)
- behavior
reproductive — (624-1)
- belt
metropolitan — (307-5)
- benefit (931-1)
- betrothal (505-1*)
- betrothed (505-1*)
- bias
age reporting — (152-5)
- interviewer — (164-9)
- bilingual (340-5)
- bilingualism (340-5*)
- bill of mortality (430-1*)
- biological family (113-1)
- biometric (104-6*)
- biometrician (104-6*)
- biometrics (104-6)
- biometry (104-6)
- biostatistical (104-6*)
- biostatistician (104-6*)
- biostatistics (104-6*)
- biovular twins (606-5)
- birth (601-3)
- balance of births and deaths (701-8)
- date of — (327-5)
- deficit of births over deaths ★ (701-9)
- excess of births over deaths (701-8)
- expectation of life at — (433-4)
- full-term — (605-3)
- higher order — (611-1*)
- illegitimate — (610-4)
- interval between marriage and the Nth — (612-7)
- interval between successive births (612-4)
- interval betwwen marriage and the first — (612-3)
- legitimate — (610-3)
- live — (601-4)
- multiple — (606-2)
- place of — (802-10)
- place of — statistics (813-3)
- place of — statistics ★ (814-4)
- planned — (625-3*)
- plural — (606-2)
- premature — (605-2)
- previous births to the mother (611-3)
- ratio of births to marriages (639-7)
- single — (606-1)
- unintented — (624-5*)
- unplanned — (624-5*)
- unplanned — (625-3*)
- unwanted birth (624-5*)
- year of — (325-5)
- birth at term (605-3)
- birth averted (626-7)
- birth control (624-6)
- birth control method (627-3)
- birth expectation (625-2*)
- birth grant (931-5)
- birth interval (612-2)
- closed — (612-4*)
- first — (612-3*)
- open — (612-5)
- second — (612-3*)
- straddling interval (612-6)
- birth interval between marriage and the Nth birth (612-7)
- birth of the last child
age at — (637-10)
- birth order (611-1)
- birth probability
parity-specific — (634-3)
- birth rate (632-1)
- — (633-1*)
- age-specific — (633-9)
- age-specific — (633-9)
- crude — (632-2)
- illegitimate (632-5)
- intrinsic — (703-1*)
- legitimate (632-4)
- parity-specific — (634-2)
- stable — (703-1*)
- standardized (632-7)
- total — (632-3)
- birth record (211-6)
- birth registration (211-5)
- birth spacing (612-1*)
- birth timing (612-1)
- birth weight (605-6)
- birth-rate
high- — cohort ★ (116-10)
- low- — cohort ★ (116-11)
- birthday
age at last — (322-3)
- age at next — (322-5)
- births of the present marriage (611-2)
- births per marriage
mean number of — (637-4)
- births per maternity (606-2*)
- block (210-4)
- block of flats (120-1*)
- blood
mixed — (334-5)
- blood relative (114-3)
- blue collar worker (354-2*)
- boarder (110-7)
- body temperature method
basal — (628-6)
- border traffic (803-2*)
- born
foreign- — (332-4)
- live-born child (601-5)
- mean number of children ever — per woman (637-2)
- native- — (332-3)
- new — (323-4)
- born out of wedlock
child — (610-6)
- borough (303-1*)
- boy (321-3)
- branch of economic activity (357-1)
- breadwinner (358-3)
- breast
child at the — ★ (323-5)
- breastfeeding (622-4)
- bridal pregnancy (610-5*)
- bride (501-7*)
- bridegroom (501-6*)
- broad age group (325-4)
- broken family ★ (115-4)
- broken marriage (512-7)
- brother (113-2)
- half- — (113-5)
- Bureau of the Census (204-4*)
- burial (214-3)
- burial register (430-1*)
- burial slip (215-4)
C
- calculate (132-3*)
- calculation (132-3)
- calculator (132-3*)
- desk — (220-6)
- calculus of finite differences (151-6)
- calendar
historical — (322-8)
- calendar-year life table (436-1)
- calendar-year table (153-2)
- call back (203-10)
- candidate to marriage (514-7)
- canton ★ (303-4)
- canvasser (626-3)
- canvasser method (203-11)
- cap
cervical — (629-2)
- capacity
carrying — (904-1)
- population carrying — (313-6)
- capital (306-5)
- card (213-3)
- punch — (224-3)
- punched — (224-3*)
- card punch (224-4*)
- card reader (227-5)
- card sorter (224-6)
- card verifier (224-5)
- carrying capacity (904-1)
- cartography
computer — (223-3)
- case
average duration per (425-4)
- case fatality rate (425-6)
- case of disease (420-5)
- caste (920-3*)
- category
social status — (353-6)
- cause of death (421-3)
- associated — (421-9)
- contributory — (421-9)
- immediate (421-6)
- joint causes of death (421-5)
- multiple causes of death (421-5)
- primary — (421-8)
- principal — (421-8)
- secondary — (421-9)
- single — (421-4)
- structure of causes of death ★ (421-12)
- underlying — (421-7)
- cause-specific death rate (421-10)
- cause-specific death ratio (421-11)
- cause-specific mortality (421-2)
- celibacy (515-2*)
- celibate (515-2*)
- cell
sperm — (602-4)
- censal (202-1*)
- inter — period (202-1*)
- census (202-1*)
- general — (202-2)
- mail — (203-13)
- micro — (202-5)
- national census survival ratio method (814-3*)
- partial — (202-3)
- population — (202-1)
- census area (210-2)
- census family (115-1)
- census operation (210-1)
- census schedule (206-2)
- census tract (210-5)
- center
learning — ★ (344-7)
- population — (312-7)
- centile (142-4)
- central city (307-2)
- central death rate (431-1*)
- central memory (226-2)
- central processing unit (226-1)
- central rate (135-10)
- certificate (211-4*)
- — (342-7)
- death — (430-1)
- marriage — (505-3)
- certificate of death
medical — (430-2)
- certificate of naturalization (331-3)
- cervical cap (629-2)
- chain migration ★ (806-8)
- chance (134-2)
- chance fluctuation (150-7)
- change
statistics of population — (201-2)
- change of life (620-6*)
- change of occupation (921-2)
- change of residence (213-5)
- latest — (802-7)
- change of track (347-6)
- characteristic (131-6)
- acquired — (910-4)
- hereditary — (910-3)
- lethal — (910-5)
- chart
bar — (155-9)
- statistical — (155-3)
- check (213-7)
- consistency — (221-7)
- Malthusian — (905-6)
- positive — (905-6)
- post-enumeration — ★ (202-8)
- preventive — (905-7)
- quality — (230-10)
- validity — (221-7)
- child (112-5)
- — (323-3)
- age at the birth of the last — (637-10)
- dependent — (358-4)
- desired number of children (625-2)
- female — (321-4)
- illegitimate — (610-6)
- intended number of children (625-2)
- legitimate — (610-2)
- live-born — (601-5)
- male — (321-3)
- number of children surviving (430-1*)
- pre-school — (323-7)
- school-age — (323-8)
- child at the breast ★ (323-5)
- child born out of wedlock (610-6)
- child death rate
post-infantile — (414-6)
- child ever born
mean number of children ever born per woman (637-2)
- child health program
maternal and — (933-6)
- child mortality (414-2)
- child wanted
number of children wanted (624-5)
- child welfare services (932-4)
- child-woman ratio (632-8)
- childbearing (601-2)
- childbearing period (620-1)
- childhood (323-2)
- childless (623-2*)
- childlessness (623-2*)
- children ever born per woman
mean number of — (637-2)
- children's allowance (931-3)
- chrisom (214-5)
- chromosome (911-3)
- chronic disease (423-8)
- chronic migration (804-4)
- circle ★ (303-11)
- marriage — ★ (514-5)
- citizen (330-1)
- naturalized — (331-2)
- citizenship (330-4)
- city (303-1*)
- — (306-4)
- central — (307-2)
- civil marriage (503-1)
- civil registration (211-4)
- civil registration system (211-4*)
- civil servant (357-5*)
- civil status (211-2)
- class (116-2*)
- — (130-8)
- — (345-1)
- — (345-5)
- occupational — (352-3)
- social — (920-2)
- class frequency (144-2)
- class of worker (353-1*)
- class-room (345-4)
- classification (221-4)
- occupational — (352-1)
- classification error (230-8)
- cleaning (221-6)
- clerical and office worker (354-3)
- climacteric (620-6)
- clinic
pre-natal — (932-2)
- closed birth interval (612-4*)
- closed ended question (206-8)
- closed population (701-4)
- closure
error of — (721-4)
- cluster (161-9)
- population — (306-1)
- cluster sampling (161-8)
- code (221-1*)
- — (221-1*)
- coding (221-1)
- coding scheme (221-3)
- coefficient of inbreeding (915-2)
- coefficient of kinship (915-3)
- coexist (810-2*)
- coexistence (810-2)
- cohabit (503-7*)
- cohabitation (503-7)
- cohort (116-2)
- high-birth-rate — ★ (116-10)
- hypothetical — (138-7)
- hypothetical — (713-3)
- low-birth-rate — ★ (116-11)
- synthetic — (138-7)
- synthetic — (713-3)
- cohort analysis (103-4)
- cohort fertility (636-1)
- cohort life table (436-2)
- cohort measure (138-6)
- cohort rate (135-9)
- cohort reproduction rate (711-7)
- cohort table (153-3)
- cohort-component method (720-5)
- coil (629-10)
- coitus (627-2)
- coitus interruptus (628-3)
- collect (130-4*)
- collected (130-4)
- collection (130-4*)
- data — ★ (228-3)
- collective household (110-5)
- collective migration (807-1)
- collective schedule (207-3)
- college (344-5)
- technical — ★ (344-9)
- university — (344-5*)
- colonist (810-1*)
- colonize (810-1*)
- colony (810-1)
- color (334-1)
- colored person (334-3)
- colpotomy (631-4*)
- combined age (520-12)
- common law marriage (503-3)
- communicable disease (423-4)
- communicant
list of communicants (214-7)
- community
satellite — (307-3*)
- commute (801-9*)
- commuter (801-9*)
- commuting (801-9)
- companion (503-3*)
- companionate marriage (503-4)
- comparative density index (313-1)
- comparative mortality figure (403-5*)
- comparative mortality index (403-5)
- complete (230-2*)
- complete coverage (202-4)
- complete fertility
net ★ (636-7)
- complete life table (435-1)
- complete year (322-2)
- completed fertility (636-4)
- marriage of — (637-5)
- completed parity (637-6)
- completeness (230-2)
- completion (206-4)
- complex household (111-5)
- component
illegitimate — (712-2)
- legitimate — (712-1)
- component method (720-5)
- cohort- — (720-5)
- composite family (113-7*)
- composite household (111-5)
- composition (144-4)
- compulsory (205-1)
- compulsory education (346-5)
- computation (132-3)
- compute (132-3*)
- computer (132-3*)
- — (225-2)
- computer cartography (223-3)
- computer graphing (223-3)
- computer specialist (225-6)
- conceive (602-1*)
- inability to — (621-3)
- permanent inability to — ★ (621-6)
- temporary inability — ★ (621-4)
- concept
gainful worker — (350-1*)
- labor force — (350-1*)
- conception (602-1)
- exposure to the risk of — (613-1)
- frequency of premarital conceptions ★ (637-9)
- pre-marital — (610-5)
- pre-nuptial — (610-5)
- product of — (602-6)
- conception delay (613-3)
- conception rate (638-9)
- concubinage (503-3*)
- condition
marital — (515-1)
- conditions
current demographic — ★ (102-8)
- condom (629-1)
- confidence interval (164-5)
- confinement (603-4)
- premature — (605-2)
- confinement order (611-4)
- confirmation list (214-8)
- congenital malformation (424-2)
- conglomeration (306-1)
- conjecture (154-4)
- conjugal family unit (111-6*)
- conjugal life (510-1)
- conjugal status (515-1)
- conjugal union (503-8)
- consanguineous marriage (504-2)
- consanguinity
degree of — (504-3)
- conscription list
military — (214-11)
- consensual union (503-4)
- consistency check (221-7)
- console (227-8)
- consummated (505-5)
- consummation of marriage (505-5)
- consumption (901-3)
- contact
no — (205-7)
- contagious disease (423-4*)
- contingency table (131-7)
- continuation rate (626-5)
- continuity (143-1*)
- continuous (143-1)
- dis — (143-2)
- continuous registration (213-2)
- contraception (627-1)
- hormonal — (630-2)
- contraception by steroids (630-3)
- contraceptive (627-1*)
- — (628-1*)
- oral — (630-1)
- contraceptive device (628-1*)
- contraceptive effectiveness (625-4)
- contraceptive failure (625-3)
- contraceptive failure rate (625-7)
- contraceptive jelly (629-5)
- contraceptive method (627-3)
- contraceptor (627-1*)
- contributory cause of death (421-9)
- control
birth — (624-6)
- job — language (227-1*)
- population — (930-3)
- control method
birth — (627-3)
- conurbation (307-4)
- conventional duration of pregnancy (603-2*)
- converted to an annual basis (137-4)
- copper T (629-10)
- corrected rate (136-6)
- — (136-7)
- cottage worker (354-1)
- count (203-2)
- double — (230-5*)
- head — (202-1*)
- population — (202-1*)
- counterstream (803-11)
- counting
multiple — (230-5)
- country (305-1)
- developed countries (903-3*)
- developing countries (903-3)
- less developed countries (903-3)
- low-income countries (903-3*)
- more developed countries (903-3*)
- underdeveloped countries (903-3*)
- country of arrival (801-5*)
- country of reception (801-5*)
- county (303-5)
- — (303-9)
- county seat (306-6)
- county town (306-6)
- couple (503-8)
- married — (501-8)
- newly married — (505-4)
- coverage
complete — (202-4)
- craftsman (354-2*)
- criminal abortion (604-5)
- crofter (356-3*)
- cropper
share- — (356-3)
- cross-sectional analysis (103-5)
- cross-tabulation (131-7)
- crossing (334-4*)
- crowding
degree of — (120-4)
- crowed
over — dwelling (120-5)
- crude birth rate (632-2)
- crude data (131-1)
- crude death rate (401-4)
- crude divorce rate (523-2)
- crude fertility ★ (601-7)
- crude marriage rate (520-2)
- crude rate (136-8)
- crude rate of natural increase (702-6)
- cultivable area (313-5)
- density of agricultural population per unit of — (313-3)
- density of population per unit of — (313-2)
- cultivated area (313-4)
- cumulated first marriage frequencies (520-9*)
- cumulated marriage frequencies (520-9*)
- cumulated proportion divorced (523-6*)
- cumulative fertility (636-2)
- age-specific — ★ (636-3)
- age-specific net — ★ (636-6)
- marriage duration-specific — ★ (636-3)
- marriage duration-specific net — ★ (636-6)
- cumulative net fertility (636-5)
- curettage
abortion by — (604-6)
- abortion by dilatation and — (604-6*)
- current demographic conditions ★ (102-8)
- current demographic situation ★ (102-8)
- current marriage (637-1)
- current population statistics (201-1)
- current residence
place of — (802-3)
- current school statistics (346-1)
- current users
proportion of (626-8)
- curve fitting (151-3)
- custom
marriage — (502-2)
- customary marriage (503-3)
- cycle (150-4*)
- — (343-8)
- anovulatory (622-6)
- family life — (637-8)
- menstrual — (622-2)
- cyclical (150-4*)
- cyclical fluctuation (150-4)
D
- data
basic — (131-1)
- crude — (131-1)
- numerical — (130-2)
- primary — (131-1)
- raw — (131-1)
- data analysis (222-3)
- data bank (227-2)
- data base management system (227-2)
- data collection ★ (228-3)
- data entry (228-1)
- data processing (130-9)
- electronic — (225-1)
- date
base — (720-6)
- place of residence at a fixed — (802-1)
- date of birth (327-5)
- daughter (112-7)
- day agricultural laborer (356-4*)
- de facto population (310-2)
- de facto separation (512-3)
- de jure population (310-1)
- dead (401-3*)
- death (401-3)
- associated cause of — (421-9)
- balance of births and deaths (701-8)
- cause of — (421-3)
- contributory cause of — (421-9)
- deficit of births over deaths ★ (701-9)
- distribution of life table deaths ★ (433-2)
- excess of births over deaths (701-8)
- expected deaths (403-8)
- foetal — (411-2)
- immediate cause of — (421-6)
- intra-uterine (411-2)
- joint causes of — (421-5)
- late foetal (411-5)
- medical certificate of — (430-2)
- multiple causes of — (421-5)
- observed deaths (403-7)
- perinatal — (411-6*)
- point of — (437-3)
- primary cause of — (421-8)
- principal cause of — (421-8)
- secondary cause of — (421-9)
- single cause of — (421-4)
- structure of causes of — ★ (421-12)
- underlying cause of — (421-7)
- war — (422-7*)
- death certificate (430-1)
- death function (433-1)
- death or injury due to operations of war (422-7)
- death probability (431-1)
- annual — (431-2)
- quinquennial — (431-3)
- death rate (401-2)
- age-specific — (401-7)
- cause-specific — (421-10)
- central — (431-1*)
- crude — (401-4)
- foeto-infant — ★ (413-7)
- indirectly standardized — (403-5*)
- instantaneous (431-4)
- intrinsic — (703-1*)
- life table (433-5)
- maternal — (424-6)
- post-infantile child — (414-6)
- sex-age-specific — (401-6)
- stable — (703-1*)
- death rate of the stationary population (433-5)
- death ratio
cause-specific — (421-11)
- death record (211-10)
- death registration (211-9)
- death under one year of age (412-1)
- debility (605-9)
- deceased (401-3*)
- decile (142-3)
- declared
un — (230-11)
- decline
population — (701-2)
- decree of divorce (511-2)
- decree of nullity (513-1)
- decrement
double — table (153-4)
- increment- — method ★ (153-6)
- multiple — table (153-4)
- defect
heredity — (913-3)
- deficit of births over deaths ★ (701-9)
- defined
poorly — (230-11)
- defining area
migration — (801-3*)
- defining interval
migration — (802-4*)
- degree (342-7)
- university — (343-11)
- degree of consanguinity (504-3)
- degree of crowding (120-4)
- degree of relationship (114-4)
- delay
conception — (613-3)
- delivery (603-4*)
- full term — (605-1)
- multiple — (606-2)
- premature — (605-2)
- single — (606-1)
- demographer (101-1*)
- demographic (101-1*)
- current — conditions ★ (102-8)
- current — situation ★ (102-8)
- demographic analysis (103-1)
- demographic effectiveness (625-4*)
- demographic estimate (721-2)
- demographic model (730-1)
- demographic momentum ★ (703-11)
- demographic phenomenon (103-2)
- demographic statistics (102-4)
- — (130-1)
- demographic studies (102-7)
- demographic transition (907-1)
- theory of — (907-1*)
- demography (101-1)
- descriptive — (102-3)
- economic — (104-1)
- formal — (102-9)
- historical — (102-1)
- mathematical — (102-6)
- paleo- — (102-2)
- pure — (102-5)
- social — (104-2)
- theoretical — (102-5)
- denomination (341-3)
- dense (312-1*)
- densely inhabited district (307-4*)
- density (312-1*)
- maximum potential — (313-6)
- optimum — (313-7)
- population — (312-1)
- density index (312-2)
- comparative — (313-1)
- density of population (312-1)
- density of population per unit of cultivable area (313-2)
- density of the agricultural population per unit of cultivable area (313-3)
- departement ★ (303-3)
- department
statistical — (204-4)
- departure (805-4)
- place of — (801-4)
- dependancy (358-1*)
- dependant (358-1*)
- dependency (358-1*)
- age — ratio (358-9*)
- economic — ratio (358-9)
- dependent (350-5)
- — (358-1)
- dependent child (358-4)
- dependent on
population — (359-1)
- population — agriculture (359-2)
- depopulation (930-2)
- deport (808-3*)
- deportation (808-3*)
- — (808-3*)
- deportee (808-3*)
- descendant (114-1*)
- descent (114-1)
- descriptive demography (102-3)
- descriptive statistics (223-2)
- desertion (512-4)
- desired family size (625-2*)
- desired number of children (625-2)
- desk calculator (220-6)
- destination
place of — (801-5)
- deterministic model (730-4)
- developed countries (903-3*)
- less (903-3)
- more — (903-3*)
- developing countries (903-3)
- development
economic — (903-1)
- level of — (902-3)
- deviation (141-2)
- — (150-3)
- average — (141-7)
- mean — (141-7)
- quartile — (141-6)
- standard — (141-9)
- device
contraceptive — (628-1*)
- input-output — (226-6)
- intra-uterine — (629-10)
- mass storage — (226-3)
- diagram (155-4)
- Lexis — (437-1)
- diagrammatic representation (155-1)
- dialect (340-2)
- dialectal (340-2*)
- diaphragm (629-3)
- die (401-3*)
- probability of dying (431-1)
- probability of dying before age one (412-5)
- difference (141-2)
- age — between spouses (520-11)
- calculus of finite differences (151-6)
- migration — ★ (816-8)
- mortality — (402-1)
- significant — (164-6)
- differential
index of migration differentials (816-6)
- differential fertility (601-8)
- differential migration ★ (816-8)
- differential mortality (402-1)
- digit preference (152-2)
- dilatation
abortion by — and curettage (604-6*)
- abortion by — and evacuation (604-7)
- diploma (342-7)
- direct interview (203-11)
- direct measurement of migration (812-2)
- direct method of standardization (403-3)
- in- — (403-4)
- disability (426-2)
- permanent — (426-3)
- probability of — (426-5)
- risk of — (426-5)
- disability rate (425-5)
- disability table (426-6)
- discontinuity (143-2*)
- discontinuous (143-2)
- discrete (143-3)
- disease (420-2)
- acute — (423-9)
- case of — (420-5)
- chronic — (423-8)
- communicable — (423-4)
- endemic — (423-1)
- epidemic — (423-5)
- incidence of — (420-3)
- infectious — (423-4)
- notifiable — (423-7)
- occupational — (402-6)
- prevalence of — (420-4)
- disincentive (933-8)
- disk (226-5)
- dispersed settlement (312-6)
- dispersion (141-1)
- measure of — (141-3)
- displaced person (808-6)
- displacement of population (808-7)
- dissolution of marriage (510-3)
- dissolution probability
marriage — (524-1)
- dissolved marriage (513-3)
- distance (819-6)
- distribution (144-1)
- age — (325-6)
- fertility — (639-2*)
- frequency — (144-1)
- geographical — (301-3)
- initial age — (703-4)
- sex — (320-1)
- spatial — (301-3)
- stable age — (703-3)
- distribution of life table deaths ★ (433-2)
- distribution of the population
geographical — (301-1)
- spatial — (301-1)
- distributor (626-3)
- district (303-6)
- — ★ (303-7)
- — (306-7)
- administrative — (302-2)
- densely inhabited — (307-4*)
- enumeration — (210-3)
- disturbing phenomenon ★ (103-3)
- division
legal — (302-2)
- political — (302-2)
- divorce (511-1)
- divorcé (fr) (511-5)
- divorce
decree of — (511-2)
- mean interval between — and remarriage (524-5)
- number of divorces per new marriage (523-6)
- divorce rate (523-1)
- age-specific — (523-4)
- crude — (523-2)
- duration-specific — (523-5)
- divorce rate for married persons (523-3)
- divorced
cumulated proportion — (523-6*)
- divorced person (511-4)
- divorcée (fr) (511-6)
- dizygotic twins (606-5)
- document
basic — (221-2)
- domicile (310-6*)
- dominant (912-5)
- dominant stream (803-10)
- double count (230-5*)
- double decrement table (153-4)
- double logarithmic graph (155-6)
- douche (629-8)
- downward mobility (920-6)
- drawn systematically (161-7)
- drift
genetic — (914-5)
- dropout rate (347-2)
- — (626-6)
- dual nationality (331-6)
- duration of marriage (524-2)
- duration of pregnancy (603-3)
- conventional — (603-2*)
- true — (603-2*)
- duration of residence (804-2)
- duration of stay (801-8)
- — (804-2)
- duration of working life
mean — (362-9)
- duration per case
average — (425-4)
- duration-specific cumulative fertility
marriage — ★ (636-3)
- duration-specific divorce rate (523-5)
- duration-specific fertility rate
marriage — (635-2)
- duration-specific net cumulative fertility
marriage — ★ (636-6)
- duration-specific rate (135-3)
- dwelling (120-1)
- furnished — (121-2*)
- insufficiently occupied — (120-6)
- overcrowded — (120-5)
- unfurnished — (121-2*)
- unoccupied — (120-7)
- dwelling record (812-6)
- dwelling unit (120-1)
- dynamic model (730-3)
- dynamics
population — (201-7)
- dysgenic marriage (913-6)
E
- Early foetal mortality (411-3)
- early infancy (410-3*)
- early neo-natal mortality (410-4)
- early neo-natal mortality rate (412-4)
- earner (358-3)
- principal — (111-3)
- wage — (354-2*)
- ecological (104-5*)
- ecologist (104-5*)
- ecology (104-5*)
- human — (104-5)
- economic activity (350-3)
- branch of — (357-1)
- economic demography (104-1)
- economic dependency ratio (358-9)
- economic development (903-1)
- economic growth (903-1)
- economic optimum (902-5)
- economic region (302-6)
- economically active population (350-1)
- economically inactive population (350-2)
- edit (130-5)
- — (220-8*)
- editing (130-5*)
- — (220-8)
- education
compulsory — (346-5)
- family-planning — (933-2)
- higher — (343-9)
- level of — (343-5)
- mean length of — (347-5)
- population — ★ (933-11)
- pre-school — (343-4)
- primary — (343-6)
- private — (343-3)
- public — (343-2)
- secondary — (343-7)
- technical — (343-12)
- vocational — (343-12)
- education statistics (342-2*)
- educational attainment statistics (342-4)
- educational institute ★ (344-11)
- educational institution (344-1)
- educational status (342-1)
- educational system (343-1)
- effect
growth — ★ (701-11)
- structural — ★ (701-12)
- effective fecundability (638-8)
- effective fertility (601-6)
- effectiveness
contraceptive — (625-4)
- demographic — (625-4*)
- index of migration — (815-5)
- physiological — (625-5)
- theoretical — (625-5)
- use — (625-6)
- effectiveness index (815-5)
- effectiveness of migration streams (818-4)
- efficacy (625-4*)
- efficiency
index of migration — (815-5*)
- efficiency index (815-5*)
- egg (602-3*)
- elderly, the ... (324-8)
- electronic data processing (225-1)
- electronic equipment (224-1)
- electronic processing (220-5)
- data — (225-1)
- element (160-3)
- elementary family (113-1*)
- elementary school (344-3)
- embryo (602-7)
- embryology (602-7*)
- embryonic (602-7*)
- emigrant (802-5)
- — (803-5*)
- emigrant for political religious or ethical reasons ★ (802-12)
- emigrate (803-5*)
- emigration (803-5)
- net — (805-6)
- employed (351-2)
- un — (351-3*)
- employed population (351-5)
- employee (353-3)
- government — (357-5)
- employer (353-2)
- employment (351-2*)
- — (351-2*)
- hidden un — ★ (351-10)
- partial — (351-6)
- state in — (353-1*)
- un — (351-3*)
- under — (351-6)
- employment to population ratio ★ (351-8)
- emplyed
un — (351-3)
- end of union (510-2)
- endemic disease (423-1)
- endogamous (506-1*)
- endogamy (506-1)
- endogenous infant mortality (424-1*)
- endogenous mortality (424-1)
- endowment
genetic — (911-1*)
- engaged (505-1*)
- engagement (505-1*)
- enrolled pupil (346-2)
- enrollment
level of (342-4*)
- enrollment ratio (346-4*)
- entry
data — (228-1)
- entry into the labor force (362-1*)
- re- — (362-1*)
- entry permit (812-9)
- enumerate (203-1*)
- enumeration (203-1)
- post- — check ★ (202-8)
- post- — survey (202-9)
- post- — test (230-9)
- self- — (203-12)
- under — (230-3*)
- enumeration district (210-3)
- enumerator (204-2)
- enumerator's schedule (207-3)
- epidemic (423-2)
- epidemic disease (423-5)
- epidemiological (423-6*)
- epidemiological statistics (423-6)
- epidemiologist (423-6*)
- epidemiology ★ (104-8)
- — (423-6*)
- equation
balancing — (814-2*)
- equilibrium
population — (905-4)
- equipment
electronic — (224-1)
- error
classification — (230-8)
- observation — (164-8)
- response — (164-8)
- sampling — (164-3)
- standard — (164-4)
- error of closure (721-4)
- establishment (357-2)
- estimate (154-1)
- — (154-3)
- demographic — (721-2)
- intercensal — (721-3)
- postcensal — (721-3*)
- estimate of the population (721-1)
- estimation (154-2)
- over- — (230-6)
- statistical — (164-2)
- estimation of mortality
indirect — (430-1*)
- ethical reason
emigrant for political religious or ethical reasons ★ (802-12)
- immigrant for political religious or ethical reasons ★ (802-13)
- ethnic group (333-2)
- ethnic minority (333-4)
- ethnic nationality (330-5)
- eugenic (910-1*)
- eugenic sterilization (913-4)
- eugenics (910-1)
- negative — (913-2)
- positive — (913-1)
- eugenist (910-1*)
- eurasian (334-5*)
- evacuate (808-4*)
- evacuation (808-4)
- abortion by dilatation and — (604-7)
- evacuee (808-4*)
- event
baseline — (135-4)
- mean number of events (138-4)
- nonrenewable — (201-4)
- renewable — (201-5)
- vital — (201-3)
- vital — (211-1)
- event-origin (135-4)
- ever born
mean number of children — per woman (637-2)
- ever-married person (515-8)
- ever-married survivor (522-6)
- exact age (322-7)
- examination
pre-marital — (913-5)
- excess male mortality (402-2*)
- excess mortality (402-2)
- excess mortality index ★ (402-3)
- excess of births over deaths (701-8)
- exchange
amniotic fluid — (604-9*)
- population — (808-8)
- executive (355-1*)
- executive staff (355-2)
- exit permit (812-9*)
- exit visa (812-9*)
- exodus (807-3)
- exogamous (506-3*)
- exogamy (506-3)
- exogenous infant mortality (424-1*)
- exogenous mortality (424-3)
- expectancy
life — (433-3)
- expectation
birth — (625-2*)
- expectation of life (433-3)
- expectation of life at birth (433-4)
- expectation of unmarried life (522-8)
- expectation of working life (362-6)
- gross — (362-7)
- net — (362-8)
- expected deaths (403-8)
- expel (808-3*)
- expellee (808-3*)
- exponential growth (702-3)
- exponential growth rate (702-5)
- exponential population (702-4)
- exposed to risk (134-3)
- exposure to the risk of conception (613-1)
- expulsion (808-3)
- extended family (113-7)
- horizontally — ★ (113-9)
- vertically — ★ (113-8)
- exterminate (810-5*)
- extermination (810-5*)
- external migration (803-3)
- extinct generation
method of extinct generations (437-4)
- extra-marital relation (610-6*)
- extract (206-7)
- — (220-1*)
- extracting (220-1*)
- extraction (220-1)
- menstrual — (604-7*)
- extrapolate (151-8*)
- extrapolated (151-8*)
- extrapolation (151-8)
- extrapolation of population
annual — ★ (721-5)
- exurbia (307-3*)
F
- facility (226-8)
- factor
pull — (819-3)
- push — (819-2)
- separation — (412-6)
- weighting — (140-5)
- failure
contraceptive — (625-3)
- failure rate
contraceptive — (625-7)
- false stillbirth (411-5*)
- family (112-1)
- — (115-1)
- biological — (113-1)
- broken — ★ (115-4)
- census — (115-1)
- composite — (113-7*)
- conjugal — unit (111-6*)
- elementary — (113-1*)
- extended — (113-7)
- horizontally extended — ★ (113-9)
- joint — (113-7*)
- nuclear — (113-1)
- primary — ★ (111-9)
- primary — unit (115-1*)
- residual — (“Restfamilie”) ★ (115-5)
- secondary — ★ (111-10)
- simple — (113-1*)
- single parent — ★ (115-4)
- statistical — (115-1)
- stem — ★ (113-10)
- sub- — (115-1*)
- traditional — ★ (115-3)
- vertically extended — ★ (113-8)
- Family allowance (931-3)
- family form (638-1)
- family formation (637-8)
- family helper (353-5)
- family household (110-4*)
- — ★ (115-6)
- family life cycle (637-8)
- family limitation (624-4)
- family migration (806-3)
- family nucleus (115-2)
- family planning (624-4)
- family planning method
natural — (628-4*)
- family planning program (626-1)
- family planning status (624-4*)
- family reconstitution (638-2)
- family reunification ★ (806-9)
- family size
average — (637-3)
- desired — (625-2*)
- ideal — (625-2*)
- intended — (625-2*)
- family worker (353-5)
- family-planning education (933-2)
- family-planning services (933-3)
- farm manager (356-2*)
- farm operator (356-1)
- farm population (359-2)
- non- — (359-3)
- farm worker (354-2*)
- farm-owner (356-2)
- farmer (356-1)
- tenant — (356-3)
- fatality rate
case — (425-6)
- father (112-3)
- god — (215-6)
- mean age of fathers (713-2*)
- fecund (621-1*)
- sub-fecund (621-1*)
- fecund ages (620-1*)
- fecundability (638-5)
- effective — (638-8)
- natural — (638-6)
- residual — (638-7)
- fecundity (621-1)
- adolescent sub-fecundity (622-8)
- infecundity (621-2)
- sub-fecundity (621-1*)
- sub-fecundity (622-7)
- federal state (305-4)
- federation (305-4)
- female (321-2)
- female child (321-4)
- female fertility rate (633-2)
- female generation (116-5)
- female nuptiality (520-4)
- female reproduction rate (711-2)
- fertility (601-1)
- — (623-1)
- age-specific cumulative — ★ (636-3)
- age-specific net cumulative — ★ (636-6)
- cohort — (636-1)
- completed — (636-4)
- crude — ★ (601-7)
- cumulative — (636-2)
- cumulative net — (636-5)
- differential — (601-8)
- effective — (601-6)
- illegitimate — (633-6*)
- infertility (623-2)
- legitimate — (633-5*)
- lifetime — (636-4)
- marital — (633-5*)
- marital — (635-1)
- marriage duration-specific cumulative — ★ (636-3)
- marriage duration-specific net cumulative — ★ (636-6)
- marriage of completed — (637-5)
- mean age of — (713-2*)
- natural — (638-4)
- net complete — ★ (636-7)
- net lifetime — ★ (636-7)
- non-marital (633-6*)
- period — (639-1)
- synthetic measure of — (639-3)
- total — (639-4)
- total marital — (639-5*)
- fertility distribution (639-2*)
- fertility function (639-2*)
- fertility history (638-1)
- fertility rate (633-1)
- age-specific (133-6*)
- age-specific marital — (635-3)
- female (633-2)
- general — (633-8)
- illegitimate — (633-6)
- legitimate — (633-5)
- male — (633-4)
- marriage duration-specific — (635-2)
- order-specific — (634-1)
- order-specific total — (639-6)
- overall (633-7)
- parity-specific — (634-2)
- total — (639-4)
- total legitimate — (639-5)
- fertility regulation (624-6)
- fertility schedule (639-2)
- fertility transition (907-1*)
- fertilization (602-2)
- artificial — (602-2*)
- fertilize (602-2*)
- fetal (411-1*)
- — (602-7*)
- fetus (602-7)
- field inquiry (203-5)
- field survey (203-5)
- field worker (204-2)
- fieldworker (626-3)
- figure (155-2)
- comparative mortality — (403-5*)
- file (213-3*)
- filial (112-6*)
- — (112-7*)
- filial relation (114-5)
- final (136-2)
- final parity (637-6)
- final rate (136-4)
- finite differences
calculus of — (151-6)
- firm (357-2)
- first accession to the labor force (362-1*)
- first birth
interval between marriage and the — (612-3)
- first birth interval (612-3*)
- first floor (120-1*)
- first job
person who is looking for her/his — ★ (351-11)
- first marriage (514-8)
- mean age at — (521-5)
- median age at — (521-6)
- modal age at — (521-7)
- number of first marriages (522-2)
- first marriage frequency (520-9*)
- cumulated first marriage frequencies (520-9*)
- first marriage probability (521-3)
- first marriage rate (520-6)
- first migration probability (817-2)
- first pregnancy interval (613-3)
- first-time job seeker ★ (351-11)
- fitness (914-3)
- fitness value (914-2)
- fitting
curve (151-3)
- five-year age group (325-3)
- fixed date
place of residence at a — (802-1)
- flat (120-1*)
- block of flats (120-1*)
- floor (120-1*)
- first — (120-1*)
- ground — (120-1*)
- fluctuation (150-3)
- chance — (150-7)
- cyclical — (150-4)
- irregular — (150-6)
- period — (150-4)
- random — (150-7)
- seasonal — (150-5)
- fluid exchange
amniotic — (604-9*)
- foam tablet (629-7)
- foetal (411-1*)
- — (602-7*)
- foetal death (411-2)
- late — (411-5)
- foetal mortality (411-1)
- early — (411-3)
- intermediate — (411-4)
- late — (411-5)
- foetal mortality rate (413-3)
- late (413-1)
- foetal mortality ratio (413-4)
- late (413-2)
- foeto-infant death rate ★ (413-7)
- foeto-infant mortality ★ (411-7)
- foetus (602-7)
- follow-up (205-4)
- force
accession to the labor — (361-2)
- age at accession to the labor — (362-2)
- age at separation from the labor — (362-3)
- entry into the labor — (362-1*)
- first accession to the labor — (362-1*)
- labor — (350-1*)
- labor — concept (350-1*)
- labor — participation ratio (350-6)
- mean age at accession to the labor — (362-4)
- mean age at separation from the labor — (362-5)
- probability of accession to the labor — (361-6)
- probability of separation from the labor — (361-8)
- rate of accession to the labor — (361-5)
- rate of separation from the labor — (361-7)
- re-entry into the labor — (362-1*)
- separation from the labor — (361-3)
- force of mortality (431-4)
- forced migration (808-1)
- forecast
population — (720-2)
- short-term — (720-4)
- forecast table ★ (153-5)
- foreign-born (332-4)
- foreigner (330-2)
- foreman (355-3)
- form (206-1)
- — (215-1)
- — (345-5)
- family — (638-1)
- transcription — (215-11)
- formal demography (102-9)
- formation
family — (637-8)
- forward survival ratio method (814-3*)
- fraction
sampling — (161-5)
- frame
sampling — (161-3)
- free migration (806-1)
- free union (503-5)
- freethinker (341-6)
- frequency
absolute — (144-2)
- class — (144-2)
- cumulated frist marriage frequencies (520-9*)
- cumulated marriage frequencies (520-9*)
- first marriage — (520-9*)
- marriage — (520-9*)
- relative — (133-5)
- relative — (144-3)
- ultimate — (138-3)
- frequency distribution (144-1)
- frequency of premarital conceptions ★ (637-9)
- frequency of remarriage
relative — (524-3)
- frequency polygon (155-7)
- frequency table (131-7*)
- fringe
rural-urban — (307-3*)
- urban — (307-3*)
- full term delivery (605-1)
- full-term birth (605-3)
- fulltime agricultural laborer (356-4*)
- function
death — (433-1)
- fertility — (639-2*)
- life table — (432-2)
- survivorship — (432-3)
- furnished dwelling (121-2*)
- fusion (810-3)
G
- gainful activity (350-3)
- gainful worker (350-1*)
- gainful worker concept (350-1*)
- gainfully occupied population (350-1*)
- gamete (911-6)
- gene (911-1)
- identical genes (915-1)
- gene structure (914-6)
- genealogy (215-12)
- general census (202-2)
- general life table (435-4)
- general rate (134-7)
- general rate fertility (633-8)
- generation (116-1)
- — (116-3)
- female — (116-5)
- male — (116-4)
- maternal — (116-5)
- mean interval between successive generations (713-1)
- mean length of a — (713-1)
- method of extinct generations (437-4)
- middle-aged — ★ (116-7)
- older — ★ (116-8)
- paternal — (116-4)
- second — ★ (116-9)
- young and rising — ★ (116-6)
- generation in the prime of life ★ (116-7)
- generation life table (436-2)
- generation rate (135-9)
- generation reproduction rate (711-7)
- generation table (153-3)
- generational analysis (103-4)
- genetic (911-2*)
- genetic drift (914-5)
- genetic endowment (911-1*)
- genetic load (914-4)
- genetic relative (114-3)
- geneticist (911-2*)
- genetics (911-2)
- human — (104-4*)
- population — (104-4)
- genocide (810-5*)
- genotype (912-1)
- genotypic structure (914-7)
- geographical distribution (301-3)
- geographical distribution of the population (301-1)
- geographical mobility (801-1)
- geography
human — ★ (104-7)
- geometric average (140-3)
- geometric growth (702-3*)
- geometric mean (140-3)
- geriatric (922-2*)
- geriatrician (922-2*)
- geriatrics (922-2)
- gerontological (922-1*)
- gerontologist (922-1*)
- gerontology (922-1)
- gestation (602-5)
- period of — (603-3)
- girl (321-4)
- godfather (215-6)
- godmother (215-7)
- governing
non-self- — territory (305-8)
- self- — territory (305-7)
- government employee (357-5)
- grade (345-5)
- grade attainment (342-5)
- graduate (151-1*)
- — (345-6*)
- post- — student (345-6*)
- under — (345-6*)
- graduate student (345-6*)
- graduated (151-1*)
- graduation (151-1)
- graphic — (151-2)
- grant (931-2)
- birth — (931-5)
- maternity — (931-5)
- graph (155-2)
- double logarithmic — (155-6)
- logarithmic — (155-5)
- semi-logarithmic — (155-5)
- true logarithmic — (155-6)
- graphic graduation (151-2)
- graphic representation (155-1)
- graphing
computer — (223-3)
- gravity model (819-5)
- groom (501-6*)
- gross expectation of working life (362-7)
- gross interchange (805-10)
- gross national product per capita (902-7*)
- gross nuptiality table (522-1)
- gross replacement (710-3)
- gross reproduction (710-3)
- gross reproduction rate (711-4)
- period — (639-4*)
- ground floor (120-1*)
- group (130-7)
- age — (325-2)
- broad age — (325-4)
- ethnic — (333-2)
- five-year age — (325-3)
- kinship — (114-3)
- occupational — (352-3)
- quinquennial age — (325-3)
- social status — (920-1)
- socioeconomic — (920-1)
- tribal — (333-2*)
- group migration (807-1)
- group of persons among whom mate selection takes place ★ (514-5)
- group quarters (120-1*)
- other resident of — (310-7*)
- group survival (904-3)
- grouped settlement (312-5)
- growth
economic — (903-1)
- exponential — (702-3)
- geometric — (702-3*)
- instantaneous rate of — (702-5)
- mean annual rate of — (702-2)
- negative — (701-3)
- optimum rate of — (903-2)
- population — (201-9)
- population — (701-1)
- transitional — (907-4)
- zero population — ★ (701-10)
- growth due to migration
population — ★ (805-1)
- growth effet ★ (701-11)
- growth potential (703-5)
- growth rate (702-1)
- exponential — (702-5)
H
- half-brother (113-5)
- half-sister (113-6)
- hamlet (306-2)
- handicap (360-2)
- mental — (360-4)
- physical — (360-3)
- handicapped (360-1)
- hardware (225-3)
- head (110-2)
- life table for selected heads (435-3)
- head count (202-1*)
- head of the household (111-2)
- heading (221-5)
- headship (111-2*)
- headship ratio (111-2*)
- health
ill- — (420-2)
- public — (932-1)
- health policy ★ (930-8)
- health program (933-4)
- health statistics (421-1)
- heaping (152-2)
- age — (152-3)
- hearth (110-3)
- hearth tax list (214-9)
- helper
family — (353-5)
- hereditary (910-2*)
- hereditary characteristic (910-3)
- hereditary defect (913-3)
- heredity (910-2)
- heterogamous (506-6*)
- heterogamy (506-6)
- heterogeneity (134-5*)
- heterogeneous (134-5)
- heterozygous (912-3)
- hidden unemployment ★ (351-10)
- high-birth-rate cohort ★ (116-10)
- higher education (343-9)
- higher order birth (611-1*)
- histogram (155-8)
- historical calendar (322-8)
- historical demography (102-1)
- history
fertility — (638-1)
- pregnancy — (638-3)
- reproductive — (638-1)
- holder
scholarship — (345-2*)
- home worker (354-1)
- homemaker (350-4)
- homicide (422-6)
- homogamous (506-5*)
- homogamy (506-5)
- homogeneity (134-4*)
- homogeneous (134-4)
- homozygous (912-2)
- horizontally extended family ★ (113-9)
- hormonal contraception (630-2)
- house
private — (120-1*)
- tenement — (120-1*)
- household (110-3)
- collective — (110-5)
- complex — (111-5)
- composite — (111-5)
- family — (110-4*)
- family — ★ (115-6)
- head of the — (111-2)
- institutional — (110-5*)
- member of the — (111-1)
- one- — structure (120-1*)
- one-person — (110-6)
- persons not living in households (110-5*)
- private — (110-4)
- household population (110-5*)
- household schedule (207-2)
- household size (111-11)
- householder (111-2*)
- householder method (203-12)
- housewife (350-4)
- human being ★ (321-5)
- human ecology (104-5)
- human genetics (104-4*)
- human geography ★ (104-7)
- human longevity (434-3)
- husband (501-6)
- hypothetical cohort (138-7)
- — (713-3)
- hysteroctomy (631-6)
- hysterotomy (604-8)
I
- I.Q. (327-6)
- I.U.D. (629-10)
- ideal family size (625-2*)
- identical genes (915-1)
- identical twins (606-4)
- ill-health (420-2)
- illegal abortion (604-5)
- illegitimacy ratio (632-6)
- illegitimate birth (610-4)
- illegitimate birth rate (632-5)
- illegitimate child (610-6)
- illegitimate component (712-2)
- illegitimate fertility (633-6*)
- illegitimate fertility rate (633-6)
- illiteracy (342-3*)
- illiteracy ratio (342-2*)
- illiterate (342-3)
- illness (420-2)
- mean number of days of — (425-5)
- immature (605-8)
- immaturity (605-7)
- immediate cause of death (421-6)
- immigrant (802-6)
- — (803-4*)
- immigrant for political religious or ethical reasons ★ (802-13)
- immigrate (803-4*)
- immigration (803-4)
- net — (805-5)
- selective — (811-3)
- immigration law (811-2)
- impairment (426-1)
- in-laws (114-8*)
- in-migrant (802-6)
- proportion of in-migrants (816-3)
- proportion of lifetime in-migrants (816-4)
- statistics on in-migrants (813-2)
- in-migration (803-7)
- net — (805-5)
- inability to conceive (621-3)
- permanent — ★ (621-6)
- temporary — ★ (621-4)
- inability to procreate ★ (621-10)
- inactive
economically — population (350-2)
- inactive person ★ (351-9)
- inbreeding
coefficient of — (915-2)
- incapacity (426-2)
- professional — ★ (426-7)
- work — ★ (426-8)
- incentive (933-7)
- incidence of disease (420-3)
- incidence rate (425-2)
- income per capita
real national — (902-7)
- increase
crude rate of natural — (702-6)
- intrinsic rate of natural — (703-1)
- natural — (201-10)
- natural — (701-7)
- true rate of natural — (703-1*)
- increased longevity (327-2)
- increment-decrement method ★ (153-6)
- independent means
person of — (358-5)
- independent worker (353-4)
- index (132-7)
- comparative density — (313-1)
- comparative mortality — (403-5)
- density — (312-2)
- effectiveness — (815-5)
- efficiency — (815-5*)
- excess mortality — ★ (402-3)
- migration preference — (818-2)
- Pearl — ★ (638-10)
- replacement — (711-8)
- synthetic — ★ (132-5)
- synthetic — (133-6*)
- vital — (702-7)
- index number (132-7)
- index of age preference (152-4)
- index of migration differentials (816-6)
- index of migration effectiveness (815-5)
- index of migration efficiency (815-5*)
- index of migration intensity (818-1)
- index of net velocity (818-3)
- indicator (132-9)
- indices (132-4)
- indigenous (332-2)
- indirect estimation of mortality (430-1*)
- indirect method of standardization (403-4)
- indirectly standardized death rate (403-5*)
- indissolubility of marriage (512-1)
- individual (110-2)
- individual aging (327-1)
- individual migration (806-2)
- individual schedule (207-1)
- individual table (131-9)
- individual year of age (325-1)
- induced abortion (604-2)
- induction procedure
abortion by medical — (604-9)
- industrial mobility (921-5)
- industrial status (353-1*)
- industry (357-1)
- position in — (353-1*)
- infancy (323-6*)
- early — (410-3*)
- infant (323-6)
- privately baptized — ★ (214-4)
- infant death rate
foeto- — ★ (413-7)
- infant mortality (410-1)
- endogenous — (424-1*)
- exogenous — (424-1*)
- foeto- — ★ (411-7)
- infant mortality rate (412-2)
- adjusted — (412-5)
- infant welfare services (932-4)
- infantile (323-6*)
- infantile child death rate
post- — (414-6)
- infect (423-4*)
- infection (423-4*)
- infectious (423-4*)
- infectious disease (423-4)
- infecund (621-2*)
- infecundity (621-2)
- infertility (623-2)
- permanent — (623-4)
- total — ★ (623-3)
- voluntary — ★ (623-5)
- infirm (360-1)
- infirmity (360-2)
- — (426-4)
- mental — (360-4)
- physical — (360-3)
- informant (204-1)
- inhabit (101-5*)
- inhabitant (101-5)
- inhabited district
densely — (307-4*)
- initial age distribution (703-4)
- injection
abortion by saline — (604-9*)
- injury (422-1)
- death or — due to operations of war (422-7)
- war — (422-7*)
- inmate
institutional — (310-7*)
- input (228-1)
- input-output device (226-6)
- inquiry (203-4)
- field — (203-5)
- postal — (203-7)
- voluntary — (205-2)
- insemination
artificial — (602-2*)
- inspector (204-3)
- instantaneous death rate (431-4)
- instantaneous rate (137-5)
- instantaneous rate of growth (702-5)
- institute
educational — ★ (344-11)
- institution
educational — (344-1)
- institutional household (110-5*)
- institutional inmate (310-7*)
- institutional population (310-7)
- institutional schedule (207-4)
- instruction (342-8)
- insufficiently occupied dwelling (120-6)
- integration (810-4)
- intelligence quotient (327-6)
- intended family size (625-2*)
- intended number of children (625-2)
- intensity (138-1)
- index of migration — (818-1)
- intent to marry (505-1)
- intention
reproductive — (625-2*)
- intentional abortion (604-2)
- inter-generational social mobility (920-7)
- inter-pregnancy interval (613-4)
- net — (613-5)
- open — (613-6)
- intercensal estimate (721-3)
- intercensal period (202-1*)
- interchange
gross — (805-10)
- net — (805-9)
- intercourse
sexual — (627-2)
- intermediate foetal mortality (411-4)
- internal migration (803-1)
- International Labour Office (352-1*)
- international migration (803-2)
- International Standard Classification of Occupations (352-1*)
- interpolate (151-7*)
- interpolated (151-7*)
- interpolation (151-7)
- interquartile range (141-5)
- semi- — (141-6)
- interval
birth — (612-2)
- closed birth — (612-4*)
- confidence — (164-5)
- first birth — (612-3*)
- first pregnancy — (613-3)
- inter-pregnancy — (613-4)
- migration defining — (802-4*)
- net inter-pregnancy — (613-5)
- open birth (612-5)
- open inter-pregnancy interval (613-6)
- pregnancy — (613-2)
- second birth — (612-3*)
- straddling — (612-6)
- interval between divorce and remarriage
mean — (524-5)
- interval between marriage and the first birth (612-3)
- interval between successive births (612-4)
- interval between successive generations
mean — (713-1)
- interval between widowhood and remarriage
mean — (524-4)
- intervening obstacle (819-4)
- intervening opportunity (819-7)
- interview
direct — (203-11)
- personal — (203-6)
- interviewee (204-1*)
- interviewer (204-2)
- interviewer bias (164-9)
- intra-generational social mobility (920-7*)
- intra-uterine death (411-2)
- intra-uterine device (629-10)
- intra-uterine mortality (411-1)
- intra-uterine mortality table (413-5)
- intrinsic birth rate (703-1*)
- intrinsic death rate (703-1*)
- intrinsic rate of natural increase (703-1)
- investment (901-5)
- irregular fluctuation (150-6)
- isolate (506-2)
J
- jelly
contraceptive — (629-5)
- job
first-time — seeker ★ (351-11)
- person who is looking for her/his first — ★ (351-11)
- job control language (227-1*)
- job mobility (921-4)
- joint causes of death (421-5)
- joint family (113-7*)
- joint reproduction rate (711-6)
- journey to work (801-9*)
- judicial separation (512-5)
K
- KAP survey (626-8*)
- keypunch (224-4)
- kin (114-3)
- kindergarten (344-2)
- kinship (114-3*)
- coefficent of — (915-3)
- kinship group (114-3)
- kitchen (120-2*)
- knowledge
survey of — attitude and practice (626-8*)
- known
un — (230-11)
L
- labor (603-4*)
- labor force (350-1*)
- accession to the — (361-2)
- age at accession to the — (362-2)
- age at separation from the — (362-3)
- entry into the — (362-1*)
- first accession to the — (362-1*)
- mean age at accession to the — (362-4)
- mean age at separation from the — (362-5)
- probability of accession to the — (361-6)
- probability of separation from the — (361-8)
- rate of accession to the — (361-5)
- rate of separation from the — (361-7)
- re-entry into the — (362-1*)
- separation from the — (361-3)
- labor force concept (350-1*)
- labor force participation ratio (350-6)
- labor market ★ (901-6)
- labor migration (806-5)
- labor mobility (921-1)
- labor permit (812-11)
- labor reserve ★ (351-10)
- laborer (354-7*)
- agricultural — (356-4)
- day agricultural — (356-4*)
- fulltime agricultural — (356-4*)
- migrant — (356-4*)
- non-farm (354-2*)
- seasonal agricultural — (356-4*)
- landlord (121-1)
- language (340-1)
- job control — (227-1*)
- mother — (340-3)
- programming — (227-1)
- statistics of — (340-6)
- usual — (340-4)
- laparoscopy (631-4*)
- laparotomy (631-4*)
- last birthday
age at — (322-3)
- last child
age at the birth of the — (637-10)
- last menses (603-2*)
- last previous residence
place of — (802-2)
- late foetal death (411-5)
- late foetal mortality (411-5)
- late foetal mortality rate (413-1)
- late foetal mortality ratio (413-2)
- late neo-natal mortality ★ (410-6)
- latest change of residence (802-7)
- latest migration (802-7)
- law
common — marriage (503-3)
- immigration — (811-2)
- logistic — (703-10)
- marriage law (502-1)
- laws
in- — (114-8*)
- learning center ★ (344-7)
- least squares
method of — (151-4)
- leaving school (347-1)
- age at — (342-6)
- legal abortion (604-4)
- legal division (302-2)
- legal residence (310-6*)
- legal separation (512-5)
- legitimacy (610-1)
- legitimate birth (610-3)
- illegitimate birth (610-4)
- legitimate birth rate (632-4)
- legitimate child (610-2)
- illegitimate child (610-6)
- legitimate component (712-1)
- legitimate fertility (633-5*)
- legitimate fertility rate (633-5)
- total — (639-5)
- legitimated (610-8)
- legitimation (610-9)
- legitimized (610-8)
- length
mean — of education (347-5)
- length of a generation
mean — (713-1)
- length of absence (801-7)
- length of life (434-3)
- mean — (433-4)
- median (434-1)
- probable (434-1)
- less developed countries (903-3)
- lethal characteristic (910-5)
- lethality (425-6*)
- level ★ (343-10)
- subsistence — (905-5)
- level of development (902-3)
- level of education (343-5)
- level of enrollment (342-4*)
- level of living (902-6)
- level of significance (164-7)
- Lexis diagram (437-1)
- license
marriage — (505-2)
- life
change of — (620-6*)
- conjugal — (510-1)
- expectation of — (433-3)
- expectation of — at birth (433-4)
- expectation of unmarried — (522-8)
- expectation of working — (362-6)
- generation in the prime of — ★ (116-7)
- gross expectation of working — (362-7)
- length of (434-3)
- married — (510-1)
- mean duration of working — (362-9)
- mean length of — (433-4)
- net expectation of working — (362-8)
- stage of — (323-1)
- table of school — (347-4)
- table of working — (362-1)
- total number of years lived (433-3*)
- working — (361-1)
- life cycle
family — (637-8)
- life expectancy (433-3)
- life line (437-2)
- life span (434-4)
- life table (432-1)
- abridged — (435-2)
- calendar-year — (436-1)
- cohort — (436-2)
- complete — (435-1)
- distribution of — deaths ★ (433-2)
- general — (435-4)
- model — (435-5)
- period (436-2)
- period — (436-1)
- life table death rate (433-5)
- life table for selected heads (435-3)
- life table function (432-2)
- life table survival ratio method (814-3*)
- life-time abortion rate (640-3)
- life-time migrant (802-11)
- lifetime fertility (636-4)
- net — ★ (636-7)
- lifetime in-migrant
proportion of lifetime in-migrants (816-4)
- ligation
tubal — (631-4)
- limitation
family — (624-4)
- line
life — (437-2)
- line printer (227-6)
- lingual
bi — (340-5)
- multi — (340-5)
- linguistic (340-1*)
- linguistic minority (333-4)
- linguistics (340-1*)
- linked migration ★ (806-8)
- list (203-3)
- confirmation — (214-8)
- hearth tax — (214-9)
- military conscription — (214-11)
- nominal — (207-3)
- passenger — (812-7)
- list of communicants (214-7)
- listing (223-1)
- literacy (342-2*)
- il — ratio (342-2*)
- literacy ratio (342-2*)
- literacy statistics (342-2*)
- literate (342-2)
- il — (342-3*)
- semi- — (342-3*)
- live birth (601-4)
- live-born (601-4*)
- live-born child (601-5)
- living
level of — (902-6)
- persons not — in households (110-5*)
- standard of — (902-6)
- living quarter (120-1)
- load
genetic — (914-4)
- loan
marriage — (931-7)
- local move (803-6)
- locality (306-1)
- locus (911-4)
- lodger (110-8)
- logarithmic graph (155-5)
- double — (155-6)
- semi- — (155-5)
- true — (155-6)
- logistic law (703-10)
- logistic population (703-9)
- longevity
human (434-3)
- increased — (327-2)
- longitudinal analysis (103-4*)
- longitudinal migration analysis (817-1)
- look for
person who is looking for her/his first job ★ (351-11)
- loop (629-10)
- loss of nationality (331-5)
- low-birth-rate cohort ★ (116-11)
- low-income countries (903-3*)
- lower service
simple or — ★ (355-4)
- lying-in period (424-4*)
M
- machine
tabulating — (224-2)
- unit record — (224-2)
- macrosimulation (730-7)
- magnetic tape (226-4)
- magnitude
order of — (154-5)
- mail census (203-13)
- mailback survey (203-7)
- maintain (213-4)
- male (321-1)
- male child (321-3)
- male fertility rate (633-4)
- male generation (116-4)
- male mortality
excess — (402-2*)
- male nuptiality (520-3)
- male reproduction rate (711-5)
- malformation
congenital — (424-2)
- Malthusian (906-1*)
- Malthusian check (905-6)
- Malthusian policy (930-3*)
- Malthusian population (702-4*)
- Malthusian population theory (905-2)
- Malthusianism (906-1)
- neo-Malthusianism (906-2)
- man (321-1)
- married — (515-6)
- management system
data base — (227-2)
- manager (353-2*)
- farm — (356-2*)
- managerial staff (355-1)
- manifest (812-7)
- manslaughter (422-6*)
- manual processing (220-3)
- manual worker (354-2)
- non- — (354-3)
- map (155-3)
- marginal worker (351-7)
- marital
pre- — conception (610-5)
- marital condition (515-1)
- marital fertility (633-5*)
- — (635-1)
- non- — (633-6*)
- total — (639-5*)
- marital fertility rate (633-5)
- age-specific — (635-3)
- marital relation
extra- — (610-6*)
- marital status (515-1)
- abortion rate by age and — ★ (640-5)
- probability that a pregnancy results in an abortion by age and — ★ (640-6)
- market
labor — ★ (901-6)
- marriage — (514-4)
- marriage (501-2)
- — (501-4)
- age at — (520-8)
- annulment of — (513-1)
- births of the present — (611-2)
- broken — (512-7)
- candidate to — (514-7)
- civil — (503-1)
- common law — (503-3)
- companionate — (503-4)
- consanguineous — (504-2)
- consummation of — (505-5)
- current — (637-1)
- customary — (503-3)
- dissolution of — (510-3)
- dissolved — (513-3)
- duration of — (524-2)
- dysgenic — (913-6)
- first — (514-8)
- interval between — and the first birth (612-3)
- interval between — and the Nth birth (612-7)
- mean age at — (520-10)
- mean age at — (520-10)
- mean age at first — (521-5)
- mean interval between divorce and remarriage (524-5)
- mean interval between widowhood and remarriage (524-4)
- mean number of births per — (637-4)
- median age at first — (521-6)
- minimum age at — (504-1)
- mixed — (506-4)
- modal age at first — (521-7)
- number of divorces per new (523-6)
- number of first marriages (522-2)
- postponement of — (905-9)
- ratio of births to marriages (639-7)
- relationship by — (114-8)
- relative frequence of remarriage (524-3)
- religious — (503-2)
- remarriage (514-9)
- singulate mean age at — (521-8)
- valid — (513-2)
- marriage certificate (505-3)
- marriage custom (502-2)
- marriage dissolution probability (524-1)
- marriage duration-specific cumulative fertility ★ (636-3)
- marriage duration-specific fertility rates (635-2)
- marriage duration-specific net cumulative fertility ★ (636-6)
- marriage frequency (520-9*)
- cumulated first marriage frequencies (520-9*)
- cumulated marriage frequencies (520-9*)
- first — (520-9*)
- marriage indissolubility (512-1)
- marriage law (502-1)
- marriage license (505-2)
- marriage loan (931-7)
- marriage market (514-4)
- marriage migration (806-6)
- marriage of completed fertility (637-5)
- marriage order (514-10)
- marriage probability
first — (521-3)
- marriage rate (520-1)
- age-specific (520-9)
- crude — (520-2)
- first — (520-6)
- remarriage rate (520-7)
- sex-specific — (520-5)
- marriage record (211-8)
- marriage registration (211-7)
- marriage slip (215-3)
- marriageable (501-4*)
- — (514-1)
- marriageable circle ★ (514-5)
- marriageable population (514-2)
- non- — (514-3)
- married (501-4*)
- divorce rate for — persons (523-3)
- ever- — person (515-8)
- ever- — survivor (522-6)
- expectation of unmarried life (522-8)
- never-married (515-2)
- proportion never — (521-1)
- married couple (501-8)
- newly — (505-4)
- married life (510-1)
- married man (515-6)
- married person (515-5)
- married woman (515-7)
- marry (501-4*)
- intent to — (505-1)
- masculinity (320-3)
- masculinity proportion (320-4)
- mass migration (807-2)
- mass storage device (226-3)
- match (213-6)
- mate (503-3*)
- mate selection (514-6)
- group of persons among whom — takes place ★ (514-5)
- maternal (112-4*)
- maternal and child health program (933-6)
- maternal death rate (424-6)
- maternal generation (116-5)
- maternal mortality (424-5)
- maternal reproduction rate (711-2)
- maternity (606-2*)
- maternity grant (931-5)
- maternity services (932-3)
- mathematical demography (102-6)
- mating
random — (912-8)
- matrix method of projection (720-7)
- maturation (324-4*)
- mature (324-4*)
- maturity (324-4)
- maximum population (904-1)
- maximum potential density (313-6)
- mean (140-1)
- arithmetic — (140-2)
- geometric — (140-3)
- weighted — (140-4)
- mean age (326-1)
- mean age at accession to the labor force (362-4)
- mean age at first marriage (521-5)
- mean age at marriage (520-10)
- singulate — (521-8)
- mean age at separation from the labor force (362-5)
- mean age of fathers (713-2*)
- mean age of fertility (713-2*)
- mean age of mothers (713-2)
- mean annual rate (137-3)
- mean annual rate of growth (702-2)
- mean deviation (141-7)
- mean duration of working life (362-9)
- mean interval between divorce and remarriage (524-5)
- mean interval between successive generations (713-1)
- mean interval between widowood and remarriage (524-4)
- mean length of a generation (713-1)
- mean length of education (347-5)
- mean length of life (433-4)
- mean number of births per marriage (637-4)
- mean number of children ever born per woman (637-2)
- mean number of days of illness (425-5)
- mean number of events (138-4)
- mean number of moves (817-8)
- mean population (401-5)
- mean selective values (914-3)
- means
person of independent — (358-5)
- means of subsistence (905-3)
- measure
cohort — (138-6)
- period — (138-5)
- measure of dispersion (141-3)
- measure of fertility
synthetic — (639-3)
- measurement of migration
direct — (812-2)
- mechanical processing (220-4)
- median (140-6)
- median age at first marriage (521-6)
- median length of life (434-1)
- medical certificate of death (430-2)
- medical induction procedure
abortion by — (604-9)
- megalopolis (307-5)
- member of the armed forces (357-6)
- member of the household (111-1)
- memory
central — (226-2)
- menarche (620-5)
- menopausal (620-6*)
- menopause (620-6)
- menses (620-4)
- last — (603-2*)
- menstrual (620-3*)
- menstrual cycle (622-2)
- menstrual extraction (604-7*)
- menstrual regulation (604-7*)
- menstruate (620-3*)
- menstruation (620-3)
- mental age (327-4)
- mental handicap (360-4)
- mental infirmity (360-4)
- mestizo (334-5*)
- method
appliance — (628-1)
- average survival ratio — (814-3*)
- barrier (628-1*)
- basal body temperature — (628-6)
- birth control — (627-3)
- canvasser — (203-11)
- cohort-component — (720-5)
- component — (720-5)
- contraceptive — (627-3)
- forward survival ratio — (814-3*)
- householder — (203-12)
- increment-decrement — ★ (153-6)
- life table survival ratio — (814-3*)
- multi-state — ★ (153-6)
- national census survival ratio — (814-3*)
- natural family planning — (628-4*)
- non-appliance — (628-2)
- residual — (814-1)
- reverse survival ratio — (814-3*)
- rhythm — (628-4)
- survival ratio (814-3)
- vital statistics — (814-2)
- method of extinct generations (437-4)
- method of least squares (151-4)
- method of projection
matrix — (720-7)
- method of residues (814-1)
- method of standardization
direct — (403-3)
- indirect — (403-4)
- metropolis (306-4*)
- metropolitan (306-4*)
- metropolitan area (307-4)
- metropolitan belt (307-5)
- metropolitan region ★ (307-6)
- metropolitan statistical area
standard — (307-4*)
- micro census (202-5)
- microsimulation (730-8)
- mid-year population (135-6)
- middle service ★ (355-5)
- middle-aged generation ★ (116-7)
- migrant (801-3*)
- — (802-4)
- emigrant (802-5)
- immigrant (802-6)
- in-migrant (802-6)
- life-time — (802-11)
- net number of migrants (805-2*)
- out-migrant (802-5)
- primary — (804-4*)
- primary — (806-4*)
- proportion of migrants (816-1)
- return — (804-3*)
- secondary — (804-4*)
- secondary — (806-4*)
- statistics on migrants (813-1)
- migrant laborer (356-4*)
- migrate (801-3*)
- migrate into (802-8)
- migrate out (802-9)
- migration (801-3)
- ancillary — (806-4)
- annual rate of net — (815-3)
- annual rate of total — (815-4)
- balance of — (701-6)
- chain — ★ (806-8)
- chronic — (804-4)
- collective — (807-1)
- differential — ★ (816-8)
- direct measurement of — (812-2)
- emigration (803-5)
- external — (803-3)
- family — (806-3)
- forced — (808-1)
- free — (806-1)
- group — (807-1)
- immigration (803-4)
- in-migration (803-7)
- individual — (806-2)
- internal — (803-1)
- international — (803-2)
- labor — (806-5)
- latest — (802-7)
- linked — ★ (806-8)
- marriage — (806-6)
- mass — (807-2)
- net — (701-6)
- net — (805-2)
- order of — (804-1)
- out-migration (803-8)
- population growth due to — ★ (805-1)
- primary — (804-4*)
- repeat — (804-4)
- retirement — (806-7)
- return — (804-3)
- rural-urban — (804-5)
- seasonal — (801-10*)
- secondary — (804-4*)
- secondary — (806-4)
- selectivity of — (816-7)
- serial — (804-6)
- serial — ★ (804-7)
- spontaneous — (806-1)
- stage — (804-6)
- step — (804-6)
- volume of — (805-7)
- voluntary — (806-1)
- migration analysis
longitudinal — (817-1)
- migration balance (805-2*)
- migration defining area (801-3*)
- migration defining interval (802-4*)
- migration difference ★ (816-8)
- migration differential
index of migration differentials (816-6)
- migration effectiveness
index of — (815-5)
- migration efficiency
index of — (815-5*)
- migration intensity
index of — (818-1)
- migration model (819-1)
- migration network (816-7*)
- migration policy (811-1)
- — ★ (930-7)
- migration preference index (818-2)
- migration probability
first — (817-2)
- migration probability by order of move (817-6)
- migration rate (815-1)
- all orders — (817-7)
- annual — (815-2)
- Migration statistics (812-1)
- migration stream (803-9)
- effectiveness of migration streams (818-4)
- migration table
all orders — (817-9)
- migratory (801-3*)
- military conscription list (214-11)
- military personnel (357-6)
- minimum age at marriage (504-1)
- minimum population (904-2)
- minority (333-4)
- ethnic (333-4)
- linguistic — (333-4)
- national — (333-4)
- religious (333-4)
- miscarriage (411-3*)
- — (604-1)
- miscegenation (334-4)
- misreporting (230-7)
- age — (152-5)
- misspecified (230-11)
- mixed blood (334-5)
- mixed marriage (506-4)
- mixed parentage (334-5)
- mobility
downward — (920-6)
- geographical — (801-1)
- industrial — (921-5)
- inter-generational social — (920-7)
- intra-generational social — (920-7*)
- job — (921-4)
- labor — (921-1)
- occupational — (921-3)
- residential — (803-6)
- social — (920-4)
- spatial — (801-1)
- upward — (920-5)
- modal (140-8*)
- modal age at death (434-2)
- modal age at first marriage (521-7)
- modality (222-2)
- mode (140-8)
- timesharing — (227-9)
- model
demographic — (730-1)
- deterministic — (730-4)
- dynamic — (730-3)
- gravity — (819-5)
- migration — (819-1)
- probabilistic — (730-5)
- static — (730-2)
- stochastic — (730-5)
- model life table (435-5)
- model table (730-1*)
- momentum
demographic — ★ (703-11)
- monogamous (502-3)
- monogamy (502-3*)
- monozygotic twins (606-4)
- moral restraint (905-8)
- morbid state (420-7)
- morbidity (420-1)
- morbidity rate (425-1)
- morbidity ratio (425-1)
- morbidity statistics (420-6)
- more developed countries (903-3*)
- mortality (401-1)
- adult — (414-4)
- age-specific — (414-1)
- bill of — (430-1*)
- cause-specific — (421-2)
- child — (414-2)
- comparative — figure (403-5*)
- comparative — index (403-5)
- differential — (402-1)
- early foetal — (411-3)
- early neo-natal — (410-4)
- endogeneous — (424-1)
- endogenous infant — (424-1*)
- excess — (402-2)
- excess — index ★ (402-3)
- excess male — (402-2*)
- exogeneous — (424-3)
- exogenous infant — (424-1*)
- foetal — (411-1)
- foeto-infant — ★ (411-7)
- force of — (431-4)
- indirect estimation of — (430-1*)
- infant — (410-1)
- intermediate foetal — (411-4)
- intra-uterine — (411-1)
- late foetal — (411-5)
- late neo-natal — ★ (410-6)
- maternal — (424-5)
- neo-natal — (410-2)
- occupational — (402-4)
- occupational — (402-5)
- perinatal — (411-6)
- post-neonatal — (410-5)
- puerperal — (424-4*)
- standard — rate (403-6)
- youth — ★ (414-3)
- mortality difference (402-1)
- mortality in utero (411-1)
- mortality of old age (414-5)
- mortality probability
projective — ★ (431-5)
- mortality rate (401-2)
- adjusted — (403-1)
- adjusted infant — (412-5)
- early neo-natal — (412-4)
- foetal — (413-3)
- infant — (412-2)
- late foetal — (413-1)
- neo-natal (412-3)
- perinatal — (413-6)
- standardized — (403-1)
- mortality ratio
late foetal — (413-2)
- perinatal — (413-6*)
- standardized — (403-5*)
- mortality ration
foetal — (413-4)
- mortality surface (436-3)
- mortality table
intra-uterine — (413-5)
- mortality transition (907-1*)
- mother (112-4)
- god — (215-7)
- mean age of mothers (713-2)
- previous births to the — (611-3)
- mother language (340-3)
- mother tongue (340-3)
- motivator (626-3)
- move (801-2)
- local — (803-6)
- mean number of moves (817-8)
- migration probability by order of — (817-6)
- seasonal — (801-10)
- temporary — (801-6)
- movement
population — ★ (201-11)
- seasonal — (801-10*)
- moving average (151-5)
- mulatto (334-5*)
- multi-national state (330-6)
- multi-stage sampling (162-3)
- multi-state method ★ (153-6)
- multigravida (611-8)
- multilingual (340-5)
- multipara (611-12)
- multiparous (611-12)
- multiple birth (606-2)
- multiple causes of death (421-5)
- multiple counting (230-5)
- multiple decrement table (153-4)
- multiple delivery (606-2)
- multiple-household structure (120-1*)
- multiround survey (203-9)
- municipality (303-1*)
- murder (422-6*)
- mutant (912-7*)
- mutation (912-7)
N
- natal
early neo- — mortality (410-4)
- early neo- — mortality rate (412-4)
- late neo- — mortality ★ (410-6)
- neo- — mortality (410-2)
- neo- — mortality rate (412-3)
- neo- — period (410-3)
- per — mortality rate (413-6)
- peri — death (411-6*)
- peri — mortality (411-6)
- peri — mortality ratio (413-6*)
- post-neo — mortality (410-5)
- natality (601-1)
- nation (305-2)
- national (305-2*)
- — (330-1)
- multi- — state (330-6)
- national census survival ratio method (814-3*)
- national income per capita
real — (902-7)
- national minority (333-4)
- national origin (811-5)
- national product per capita
gross — (902-7*)
- nationality (330-4)
- dual — (331-6)
- ethnic — (330-5)
- political — (330-4)
- nationality loss (331-5)
- native (332-1)
- native reserve (304-4)
- native-born (332-3)
- natural area (302-7)
- natural family planning method (628-4*)
- natural fecundability (638-6)
- natural fertility (638-4)
- natural increase (201-10)
- — (701-7)
- crude rate of — (702-6)
- intrinsic rate of — (703-1)
- true rate of — (703-1*)
- natural region (302-5)
- naturalization (331-1)
- naturalization certificate (331-3)
- naturalized citizen (331-2)
- naturalized person (331-2)
- negative eugenics (913-2)
- negative growth (701-3)
- negro (334-5*)
- neo-Malthusianism (906-2)
- neo-natal mortality (410-2)
- early — (410-4)
- late — ★ (410-6)
- post- — (410-5)
- neo-natal mortality rate (412-3)
- early — (412-4)
- neo-natal period (410-3)
- net complete fertility ★ (636-7)
- net cumulative fertility
age-specific — ★ (636-6)
- marriage duration-specific — ★ (636-6)
- net emigration (805-6)
- net expectation of working life (362-8)
- net fertility
cumulative — (636-5)
- net immigration (805-5)
- net in-migration (805-5)
- net inter-pregnancy interval (613-5)
- net interchange (805-9)
- net lifetime fertility ★ (636-7)
- net migration (701-6)
- — (805-2)
- annual rate of — (815-3)
- net number of migrants (805-2*)
- net nuptiality table (522-4)
- net out-migration (805-6)
- net replacement (710-4)
- net reproduction (710-4)
- net reproduction rate (711-3)
- net stream (805-9)
- net velocity
index of — (818-3)
- network
migation — (816-7*)
- never married
proportion — (521-1)
- never-married (515-2)
- new acceptors
proportion of — (626-4)
- new marriage
number of divorces per — (523-6)
- newborn (323-4)
- newly married couple (505-4)
- next birthday
age at — (322-5)
- nidation (602-8)
- no contact (205-7)
- no fixed abode
person of — (310-8)
- nomad (304-2*)
- nomadic (304-2)
- semi- — (304-3)
- nominal list (207-3)
- nominal roll ★ (215-10)
- non-agricultural population (359-3)
- non-agricultural worker (357-4)
- non-appliance method (628-2)
- non-farm laborer (354-2*)
- non-farm population (359-3)
- non-manual worker (354-3)
- non-marital fertility (633-6*)
- non-marital fertility rate (633-6)
- non-marriageable population (514-3)
- non-migrant (817-3)
- survivorship schedule of non-migrants (817-5)
- non-migrant table (817-4)
- non-numerical processing (228-5)
- non-planner (624-3)
- non-respondent (205-5)
- non-response (205-3)
- — (230-11)
- non-self-governing territory (305-8)
- non-viable (603-2)
- non-white (334-3)
- nonrenewable event (201-4)
- nonsusceptible period (622-5)
- normal age at death (434-2)
- nosography (420-9)
- nosology (420-8)
- not specified (230-11)
- not stated (230-11)
- notifiable disease (423-7)
- nuclear family (113-1)
- nucleus (111-6)
- family — (115-2)
- primary — (111-7)
- secondary — (111-8)
- urban — (307-2*)
- nulligravida (611-6)
- nullipara (611-10)
- nulliparous (611-10)
- nullity
decree of — (513-1)
- number
absolute — (131-3)
- index — (132-7)
- round — (152-1)
- total — (101-7)
- number of births per marriage
mean — (637-4)
- number of children
desired — (625-2)
- intended — (625-2)
- number of children ever born per woman
mean — (637-2)
- number of children surviving (430-1*)
- number of children wanted (624-5)
- number of days of illness
mean — (425-5)
- number of divorces per new marriage (523-6)
- number of events
mean — (138-4)
- number of first marriages (522-2)
- number of migrants
net — (805-2*)
- number of moves
mean — (817-8)
- number of years lived
total — (433-3*)
- number remaining single (522-3)
- numerical data (130-2)
- numerical processing (228-4)
- non- — (228-5)
- nuptial
pre- — conception (610-5)
- nuptial reproduction rate (712-3)
- nuptiality (501-1)
- female — (520-4)
- male — (520-3)
- nuptiality rate (520-1)
- nuptiality table (522-1)
- gross — (522-1)
- net — (522-4)
- nursery school (344-2)
O
- observation (130-3)
- period of — (137-1)
- observation error (164-8)
- observed deaths (403-7)
- obstacle
intervening — (819-4)
- occlusion ★ (631-3)
- occupation (352-2)
- change of — (921-2)
- occupational class (352-3)
- occupational classification (352-1)
- occupational disease (402-6)
- occupational group (352-3)
- occupational mobility (921-3)
- occupational mortality (402-4)
- — (402-5)
- occupied
insufficiently — dwelling (120-6)
- occupied population
gainfully — (350-1*)
- occurence
time of — (212-3*)
- office worker
clerical and — (354-3)
- official (357-5*)
- offspring (114-7)
- ogive (155-10)
- old age (324-6)
- mortality of — (414-5)
- old people (324-8)
- old population (326-5)
- older generation ★ (116-8)
- omission (230-3)
- on line (228-2)
- one year of age
death under — (412-1)
- one-household structure (120-1*)
- one-parity woman (611-9*)
- one-person household (110-6)
- open birth interval (612-5)
- open ended questions (206-9)
- open inter-pregnancy interval (613-6)
- open population (701-5)
- operating system (226-7)
- operation
census — (210-1)
- type of — (220-7)
- operations of war
death or injury due to — (422-7)
- operative (354-2*)
- operator
farm — (356-1)
- opportunity
intervening — (819-7)
- optimum (902-4)
- economic — (902-5)
- economic — (902-5*)
- social .. (902-5*)
- optimum density (313-7)
- optimum population (902-4)
- optimum power (902-5*)
- optimum rate of growth (903-2)
- oral contracptive (630-1)
- order (201-6)
- all orders migration rate (817-7)
- all orders migration table (817-9)
- birth — (611-1)
- confinement — (611-4)
- higher — birth (611-1*)
- pregnancy — (611-5)
- order of magnitude (154-5)
- order of marriage (514-10)
- order of migration (804-1)
- order of move
migration probability by — (817-6)
- order statistics (142-1)
- order-specific fertility rate (634-1)
- order-specific total fertility rate (639-6)
- origin
event- — (135-4)
- national — (811-5)
- place of — (801-4)
- orphanhood status (430-1*)
- other resident of group quarters (310-7*)
- out-migrant (802-5)
- proportion of out-migrants (816-2)
- statistics on out-migrants (813-2)
- out-migration (803-8)
- net — (805-6)
- output (228-6)
- input- — device (226-6)
- over-estimation (230-6)
- overall fertility rate (633-7)
- overcrowded (120-5*)
- overcrowded dwelling (120-5)
- overcrowding (120-5*)
- overpopulated (902-1*)
- overpopulation (902-1)
- ovulation (622-3)
- ovum (602-3)
- own account
worker on — (353-4)
- owner (121-1)
- farm- — (356-2)
P
- package
statistical — (227-4)
- paleo-demography (102-2)
- pandemic (423-3)
- panel analysis (103-4*)
- Panmixia (912-8)
- parameter
population — (164-1)
- parent (112-2)
- single — family ★ (115-4)
- parentage
mixed — (334-5)
- parental (112-2*)
- parenthood (112-2*)
- — (114-6)
- planned — (625-1)
- responsible — (625-1)
- Pareto-type model (819-5*)
- parish (303-1)
- parish register (214-1)
- parity (611-9)
- average — (637-2)
- completed — (637-6)
- final — (637-6)
- one- — woman (611-9*)
- zero- — woman (611-9*)
- parity progression ratio (637-7)
- parity-specific birth probability (634-3)
- parity-specific birth rate (634-2)
- parity-specific fertility rate (634-2)
- parochial register (214-1)
- partial census (202-3)
- partial employment (351-6)
- participation ratio
labor force — (350-6)
- particulars (206-6)
- parturition (603-4*)
- passenger list (812-7)
- paternal (112-3*)
- paternal generation (116-4)
- paternal reproduction rate (711-5)
- Pearl index ★ (638-10)
- pensioner (358-6)
- people (305-2)
- — (333-3)
- old — (324-8)
- per capita (902-7*)
- gross national product — (902-7*)
- real national income — (902-7)
- per head (902-7*)
- percentage (133-3)
- percentile (142-4)
- perinatal death (411-6*)
- perinatal mortality (411-6)
- perinatal mortality rate (413-6)
- perinatal mortality ratio (413-6*)
- period (150-4*)
- — (620-4)
- childbearing — (620-1)
- intercensal — (202-1*)
- lying-in — (424-4*)
- neo-natal — (410-3)
- nonsusceptible — (622-5)
- projection — (720-3)
- reproductive — (620-1)
- safe — (628-5)
- sterile — (622-1)
- period analysis (103-5)
- period fertility (639-1)
- period fluctuation (150-4)
- period gross reproduction rate (639-4*)
- period life table (436-1)
- period measure (138-5)
- period of gestation (603-3)
- period of observation (137-1)
- period rate (135-8)
- period table (153-2)
- periodic (150-4*)
- periodic abstinence (628-4)
- periodicity (150-4*)
- permanent disability (426-3)
- permanent inability to conceive ★ (621-6)
- permanent infertility (623-4)
- permanent resident (310-3)
- permanent sterility (621-7)
- permit
entry (812-9)
- exit — (812-9*)
- labor — (812-11)
- residence — (812-10)
- person (110-2)
- colored — (334-3)
- displaced — (808-6)
- divorced — (511-4)
- ever-married — (515-8)
- group of persons among whom mate selection takes place ★ (514-5)
- inactive — ★ (351-9)
- married — (515-5)
- naturalized — (331-2)
- retired — (358-6)
- self-supporting — (358-2)
- separated — (512-6)
- white — (334-2)
- widowed — (510-6)
- young — (324-3)
- person not living in households (110-5*)
- person of independent means (358-5)
- person of no fixed abode (310-8)
- person receiving public assistance (358-7)
- person who is looking for her/his first job ★ (351-11)
- person-year (135-7)
- personal interview (203-6)
- personnel
military — (357-6)
- pessary (629-2)
- phenomenon
demographic — (103-2)
- disturbing — ★ (103-3)
- phenotype (912-4)
- physical handicap (360-3)
- physical infirmity (360-3)
- physiological age (327-3)
- physiological effectiveness (625-5)
- pill (630-4)
- pilot survey (202-7)
- place of arrival (801-5)
- place of birth (802-10)
- place of current residence (802-3)
- place of departure (801-4)
- place of destination (801-5)
- place of last previous residence (802-2)
- place of origin (801-4)
- place of residence (310-6)
- previous (802-2)
- tabulation by — (212-3)
- place of residence at a fixed date (802-1)
- place-of-birth statistics (813-3)
- — ★ (814-4)
- placenta (603-4*)
- plan
sampling — (160-5)
- planing
natural family — method (628-4*)
- planned
unplanned birth (624-5*)
- planned birth (625-3*)
- planned parenthood (625-1)
- planner (624-2)
- non-planner (624-3)
- planning
family — (624-4)
- family — education (933-2)
- family — program (626-1)
- family — services (933-3)
- family — status (624-4*)
- plotter (228-7)
- plural birth (606-2)
- point of death (437-3)
- poisoning (422-2)
- policy
health — ★ (930-8)
- migration — (811-1)
- migration — ★ (930-7)
- population — (105-2)
- political division (302-2)
- political nationality (330-4)
- political reason
emigrants for political religious or ethical reasons ★ (802-12)
- immigrants for political religious or ethical reasons ★ (802-13)
- polyandrous (502-5)
- polyandry (502-5*)
- polygamous (502-4)
- polygamy (502-4*)
- polygon
frequency — (155-7)
- polygynous (502-6)
- polygyny (502-6*)
- poorly defined (230-11)
- population (101-3)
- — (101-4)
- actual — (310-2)
- agricultural — (359-2)
- annual extrapolation of — ★ (721-5)
- average — (135-6)
- average — (401-5)
- closed — (701-4)
- current — statistics (201-1)
- de facto — (310-2)
- de jure — (310-1)
- death rate of the stationary — (433-5)
- density of — (312-1)
- density of — per unit of cultivable area (313-2)
- density of agricultural — per unit of cultivable area (313-3)
- depopulation (930-2)
- displacement of — (808-7)
- economically active — (350-1)
- economically inactive — (350-2)
- employed — (351-5)
- employment to — ratio ★ (351-8)
- estimate of — (721-1)
- exponential — (702-4)
- farm — (359-2)
- gainfully occupied — (350-1*)
- geographical distribution of the — (301-1)
- household — (110-5*)
- institutional — (310-7)
- logistic — (703-9)
- Malthusian — (702-4*)
- marriageable — (514-2)
- mean — (401-5)
- mid-year — (135-6)
- non-agricultural — (359-3)
- non-farm — (359-3)
- non-marriageable — (514-3)
- old — (326-5)
- open — (701-5)
- overpopulation (902-1)
- quasi-stable — (703-7)
- resident — (310-1)
- rural — (311-3)
- scatter of the — (312-3)
- school-age — (346-7)
- semi-stable — ★ (703-8)
- semi-urban — (311-5)
- spatial distribution of the — (301-1)
- stable — (703-2)
- stable — analysis (703-2*)
- standard — (403-2)
- state of the — (201-8)
- stationary — (703-6)
- surplus — ★ (905-10)
- target — (626-2)
- underpopulation (902-2)
- unoccupied — (350-2)
- urban — (311-4)
- working — (350-1)
- young — (326-6)
- zero — growth ★ (701-10)
- population aggregate (306-1)
- population carrying capacity (313-6)
- population census (202-1)
- population center (312-7)
- population change
statistics of — (201-2)
- population cluster (306-1)
- population control (930-3)
- population count (202-1*)
- population decline (701-2)
- population density (312-1)
- population dependent on (359-1)
- population dependent on agriculture (359-2)
- population dynamics (201-7)
- population education ★ (933-11)
- population equilibrium (905-4)
- population exchange (808-8)
- population forecast (720-2)
- population genetics (104-4)
- population growth (201-9)
- — (701-1)
- population growth due to migration ★ (805-1)
- population maximum (904-1)
- population minimum (904-2)
- population movement ★ (201-11)
- population optimum (902-4)
- population parameter (164-1)
- population policy (105-2)
- population pressure (905-1)
- population processes (201-7)
- population program (933-1)
- population projection (720-1)
- population pyramid (325-7)
- population quality (104-3)
- population redistribution (811-6)
- — (930-6)
- population register (213-1)
- population replacement (710-1)
- population sciences ★ (101-8)
- population statistics (102-4)
- — (130-1)
- population studies (102-10)
- population theories (105-1)
- population theory
Malthusian — (905-2)
- population transfer (808-7)
- population transition (907-1)
- populationist (930-1)
- position in industry (353-1*)
- positive check (905-6)
- positive eugenics (913-1)
- post-enumeration check ★ (202-8)
- post-enumeration survey (202-9)
- post-enumeration test (230-9)
- post-graduate student (345-6*)
- post-infantile child death rate (414-6)
- post-neonatal mortality (410-5)
- post-partum amenorrhea (620-9)
- post-partum sterility (622-5*)
- post-transitional stage (907-3)
- postal inquiry (203-7)
- postcensal estimate (721-3*)
- postponement of marriage (905-9)
- potential
growth — (703-5)
- potential density
maximum — (313-6)
- potential user (626-2)
- power optimum (902-5*)
- practice
survey of knowledge attitude and — (626-8*)
- pre-marital conception (610-5)
- pre-marital examination (913-5)
- pre-natal allowance (931-6)
- pre-natal clinic (932-2)
- pre-nuptial conception (610-5)
- pre-school child (323-7)
- pre-school education (343-4)
- pre-test (202-7)
- pre-transitional stage (907-2)
- preference
digit — (152-2)
- index of age — (152-4)
- preference index
migration — (818-2)
- pregnancy (602-5)
- bridal — (610-5*)
- conventional duration of — (603-2*)
- probability that a — results in an abortion by age and marital status ★ (640-6)
- true duration of — (603-2*)
- pregnancy amenorrhea (620-8)
- pregnancy duration (603-3)
- pregnancy history (638-3)
- pregnancy interval (613-2)
- first — (613-3)
- inter- — (613-4)
- net inter- — (613-5)
- open inter- — (613-6)
- pregnancy order (611-5)
- pregnancy record (638-3)
- pregnancy wastage (411-2*)
- pregnant (602-5*)
- premarital conception
frequency of premarital conceptions ★ (637-9)
- premature baby (605-4)
- premature birth (605-2)
- premature confinement (605-2)
- premature delivery (605-2)
- prematurity (605-5)
- preparation
table — (220-9)
- pressure
population — (905-1)
- social — (933-9)
- prevalence of disease (420-4)
- prevalence rate (425-3)
- preventive check (905-7)
- previous births to the mother (611-3)
- previous place of residence (802-2)
- primary cause of death (421-8)
- primary data (131-1)
- primary education (343-6)
- primary family ★ (111-9)
- primary family unit (115-1*)
- primary migrant (804-4*)
- — (806-4*)
- primary migration (804-4*)
- primary nucleus (111-7)
- primary school (344-3)
- primary sector (357-7)
- primary sterility (621-8)
- primary unit (162-4)
- prime of life
generation in the — ★ (116-7)
- primigravida (611-7)
- primipara (611-11)
- primiparous (611-11)
- principal cause of death (421-8)
- principal earner (111-3)
- principal tenant ★ (121-5)
- printer
line — (227-6)
- private education (343-3)
- private house (120-1*)
- private household (110-4)
- private worker (357-5*)
- privately baptized infant ★ (214-4)
- probabilistic model (730-5)
- probability (134-1)
- — (135-5)
- annual death — (431-2)
- attrition — (135-5)
- first marriage — (521-3)
- first migration — (817-2)
- marriage dissolution — (524-1)
- migration — by order of move (817-6)
- parity-specific birth — (634-3)
- projective mortality ★ (431-5)
- quiquennial death — (431-3)
- probability of accession to the labor force (361-6)
- probability of death (431-1)
- probability of disability (426-5)
- probability of dying (431-1)
- probability of dying before age one (412-5)
- probability of separation from the labor force (361-8)
- probability of single survival (522-7)
- probability of survival (431-6)
- probability sample (161-1)
- probability that a pregnancy results in an abortion by age and marital status ★ (640-6)
- probable (134-1*)
- probable length of life (434-1)
- procedure
abortion by medical induction — (604-9)
- sampling — (160-1)
- process (130-9*)
- — (220-2*)
- data processing (130-9)
- processed results (228-6)
- processes
population — (201-7)
- processing (130-9*)
- — (220-2)
- batch — (227-7)
- electronic — (220-5)
- manual — (220-3)
- mechanical — (220-4)
- non-numerical — (228-5)
- numerical — (228-4)
- processing program (226-10)
- survey — (227-3)
- processing unit
central (226-1)
- procreate
inability to — ★ (621-10)
- procreation (601-2*)
- product of conception (602-6)
- product per capita
gross national — (902-7*)
- production (901-2)
- productivity (907-5)
- professional incapacity ★ (426-7)
- professional school (344-6)
- progenitor (114-2)
- progeny (114-7)
- program (225-8)
- family planning — (626-1)
- health — (933-4)
- maternal and child health — (933-6)
- population — (933-1)
- processing — (226-10)
- social welfare — (933-5)
- survey processing — (227-3)
- user's — (226-9)
- programmer (225-7)
- programming language (227-1)
- progression ratio
parity — (637-7)
- projection
backward — (720-1*)
- matrix method of — (720-7)
- population — (720-1)
- retroprojection (720-1*)
- projection period (720-3)
- projective mortality probability ★ (431-5)
- pronatalist (930-4)
- proportion (133-2)
- masculinity — (320-4)
- proportion divorced
cumulated — (523-6*)
- proportion never married (521-1)
- proportion of current users (626-8)
- proportion of in-migrants (816-3)
- proportion of lifetime in-migrants (816-4)
- proportion of lifetime out-migrants (816-5)
- proportion of migrants (816-1)
- proportion of new acceptors (626-4)
- proportion of out-migrants (816-2)
- proportion of refusals (205-8)
- proportion remaining single (521-2)
- proportion repeating a school year ★ (347-7)
- proportion single (521-4)
- proportional (133-2*)
- prostaglandins (604-9*)
- province (303-2)
- — (303-10)
- provisional (136-1)
- provisional rate (136-3)
- puberty (620-2)
- public assistance
person receiving — (358-7)
- public education (343-2)
- public health (932-1)
- public welfare recipient (358-7)
- publication of banns (505-1)
- puerperal (603-6*)
- puerperal mortality (424-4*)
- puerperium (424-4)
- — (603-6)
- pull factor (819-3)
- punch
card — (224-4*)
- punch card (224-3)
- punched card (224-3*)
- pupil (345-2)
- enrolled — (346-2)
- pupil in attendance (346-3)
- pure demography (102-5)
- push factor (819-2)
- pyramid
population — (325-7)
Q
- quadruplet (606-3*)
- quality
population — (104-3)
- quality check (230-10)
- quantile (142-1)
- quarter (306-7)
- living — (120-1)
- other resident of group quarters (310-7*)
- quartile (142-2)
- quartile deviation (141-6)
- quasi-stable population (703-7)
- question
closed ended — (206-8)
- open ended — (206-9)
- questionnaire (206-3)
- quinquennial age group (325-3)
- quinquennial death probability (431-3)
- quintuplet (606-3*)
- quota (163-3)
- quota sampling (163-2)
- quota system (811-4)
- quotient (135-5*)
- intelligence — (327-6)
R
- race (333-1)
- racial (333-1*)
- racism (333-1*)
- racist (333-1*)
- radix (432-5)
- random (150-7*)
- — (161-2)
- random fluctuation (150-7)
- random mating (912-8)
- random sample (161-1)
- random sampling
simple — (161-4)
- stratified — (162-1)
- randomize (161-2*)
- randomness (161-2*)
- range (141-4)
- interquartile — (141-5)
- semi-interquartile — (141-6)
- rate (133-4)
- abortion — (640-1)
- abortion — by age and marital status ★ (640-5)
- acceptance — (626-4)
- adjusted — (136-7)
- adjusted infant mortality — (412-5)
- adjusted mortality — (403-1)
- age group-specific — ★ (135-2)
- age-specific — (135-1)
- age-specific abortion — ★ (640-4)
- age-specific birth — (633-9)
- age-specific death — (401-7)
- age-specific divorce — (523-4)
- age-specific fertility — (133-6*)
- age-specific fertility — (633-9)
- age-specific marital fertility — (635-3)
- age-specific marriage — (520-9)
- all orders migration — (817-7)
- annual — (137-2)
- annual migration — (815-2)
- average annual — (137-3)
- birth — (632-1)
- birth — (633-1*)
- case fatality — (425-6)
- cause-specific death — (421-10)
- central — (135-10)
- central death — (431-1*)
- cohort — (135-9)
- cohort reproduction — (711-7)
- conception — (638-9)
- continuation — (626-5)
- contraceptive failure — (625-7)
- corrected — (136-6)
- corrected — (136-7)
- crude — (136-8)
- crude birth — (632-2)
- crude death — (401-4)
- crude divorce — (523-2)
- crude marriage — (520-2)
- death — (401-2)
- death — of the stationary population (433-5)
- disability — (425-5)
- divorce — (523-1)
- divorce — for married persons (523-3)
- dropout — (347-2)
- dropout — (626-6)
- duration specific divorce — (523-5)
- early neo-natal mortality — (412-4)
- exponential growth — (702-5)
- female fertility — (633-2)
- female reproduction — (711-2)
- fertility — (633-1)
- final — (136-4)
- first marriage — (520-6)
- foetal mortality — (413-3)
- foeto-infant death — ★ (413-7)
- general — (134-7)
- general fertility — (633-8)
- generation — (135-9)
- generation reproduction — (711-7)
- gross reproduction — (711-4)
- growth — (702-1)
- high-birth- — cohort ★ (116-10)
- illegitimate birth — (632-5)
- illegitimate fertility — (633-6)
- incidence — (425-2)
- indirectly standardized death — (403-5*)
- infant mortality — (412-2)
- instantaneous — (137-5)
- instantaneous death — (431-4)
- intrinsic birth — (703-1*)
- intrinsic death — (703-1*)
- joint reproduction — (711-6)
- late foetal mortality — (413-1)
- legitimate birth — (632-4)
- legitimate fertility — (633-5)
- life table death — (433-5)
- life-time abortion — (640-3)
- low-birth- — cohort ★ (116-11)
- male fertility — (633-4)
- male reproduction — (711-5)
- marriage — (520-1)
- marriage duration-specific fertility — (635-2)
- maternal death — (424-6)
- maternal reproduction — (711-2)
- mean annual — (137-3)
- migration — (815-1)
- morbidity — (425-1)
- mortality — (401-2)
- neo-natal mortality — (412-3)
- net reproduction — (711-3)
- nuptial reproduction — (712-3)
- nuptiality — (520-1)
- order-specific fertility — (634-1)
- order-specific total fertility — (639-6)
- parity-specific birth — (634-2)
- parity-specific fertility — (634-2)
- paternal reproduction — (711-5)
- perinatal mortality (413-6)
- period — (135-8)
- period gross reproduction — (639-4*)
- post-infantile child death — (414-6)
- prevalence — (425-3)
- provisional — (136-3)
- remarriage — (520-7)
- replacement — (711-1)
- reproduction — (711-1)
- retention — (347-3)
- revised — (136-5)
- sex-age-specific death — (401-6)
- specific — (134-6)
- stable birth — (703-1*)
- stable death — (703-1*)
- standard — ★ (136-9)
- standard mortality — (403-6)
- standardized — (136-7)
- standardized birth — (632-7)
- standardized mortality — (403-1)
- stillbirth — (413-1*)
- termination — (626-6)
- total birth — (632-3)
- total fertility — (639-4)
- total legitimate fertility — (639-5)
- rate of accession to the labor force (361-5)
- rate of growth
instantaneous — (702-5)
- mean annual — (702-2)
- optimum — (903-2)
- rate of natural increase
crude — (702-6)
- true — (703-1*)
- rate of natutal increase
intrinsic — (703-1)
- rate of net migration
annual — (815-3)
- rate of separation from the labor force (361-7)
- rate of total migration
annual — (815-4)
- rate,duration-specific — (135-3)
- raten sex-specific marriage — (520-5)
- ratio ★ (133-6)
- abortion — (640-2)
- activity — (350-6)
- age dependency — (358-9*)
- attendance — (346-4)
- average survival — method (814-3*)
- cause-specific death — (421-11)
- child-woman — (632-8)
- economic dependency — (358-9)
- employment to population — ★ (351-8)
- enrollment — (346-4*)
- foetal mortality (413-4)
- forward survival — method (814-3*)
- illegitimacy — (632-6)
- illiteracy — (342-2*)
- labor force participation — (350-6)
- late foetal mortality — (413-2)
- life table survival — method (814-3*)
- literacy — (342-2*)
- morbidity — (425-1)
- national census survival — method (814-3*)
- parity progression — (637-7)
- perinatal mortality — (413-6*)
- reverse survival — method (814-3*)
- sampling — (161-5)
- sex — (320-5)
- specific — (133-1)
- standardized mortality — (403-5*)
- stillbirth — (413-2*)
- survival — (431-7)
- ratio of births to marriages (639-7)
- raw data (131-1)
- re-entry into the labor force (362-1*)
- reader
card — (227-5)
- real national income per capita (902-7)
- realization (311-3*)
- rebate
tax — (931-4)
- reception
country of — (801-5*)
- recessive (912-6)
- recipient
public welfare — (358-7)
- recognition (610-7)
- reconstitution
family — (638-2)
- record
birth — (211-6)
- death — (211-10)
- dwelling — (812-6)
- marriage — (211-8)
- pregnancy — (638-3)
- registration — (211-3)
- social security — (812-4)
- subject of — (215-5)
- tax-payer — (812-5)
- unit — machine (224-2)
- vital — (211-3)
- voter registration — (812-3)
- redistribution
population — (930-6)
- redistribution of population (811-6)
- refugee (808-5)
- refusal (205-6*)
- refusals
proportion of (205-8)
- refuse (205-6)
- region (302-3)
- — (303-2)
- economic — (302-6)
- metropolitan — ★ (307-6)
- natural — (302-5)
- register (211-4*)
- — (211-4*)
- burial — (430-1*)
- parish — (214-1)
- parochial — (214-1)
- population — (213-1)
- registrar (211-11)
- registration (211-4*)
- birth — (211-5)
- civil — (211-4)
- civil — system (211-4*)
- continuous — (213-2)
- death — (211-9)
- marriage — (211-7)
- time of — (212-3*)
- under — (230-3*)
- vital — (211-4)
- registration record (211-3)
- voter — (812-3)
- registration statistics (212-1)
- regulation
fertility — (624-6)
- menstrual — (604-7*)
- rejuvenation (326-4)
- related (114-3*)
- relation
adulterous — (610-6*)
- extra-marital — (610-6*)
- filial — (114-5)
- relationship (111-4)
- — (114-3*)
- degree of — (114-4)
- relationship by marriage (114-8)
- relative (114-3*)
- blood — (114-3)
- genetic — (114-3)
- relative frequency (133-5)
- — (144-3)
- relative frequency of remarriage (524-3)
- relatives (114-3*)
- religion (341-2)
- religious marriage (503-2)
- religious minority (333-4)
- religious reason
emigrant for political religious or ethical reasons ★ (802-12)
- immigrant for political religious or ethical reasons ★ (802-13)
- Religious statistics (341-1)
- remaining single
number — (522-3)
- proportion — (521-2)
- remarriage (514-9)
- mean interval between divorce and — (524-5)
- mean interval between widowhood and — (524-4)
- relative frequency of — (524-3)
- remarriage rate (520-7)
- remarried (514-9*)
- remarry (514-9*)
- remote terminal (227-10)
- renewable event (201-5)
- non — (201-4)
- renewable resource (710-2)
- rentier (358-5)
- repatriate, v (808-2*)
- repatriation (808-2)
- repeat
proportion repeating a school year ★ (347-7)
- repeat ligration (804-4)
- replacement
gross — (710-3)
- net — (710-4)
- population — (710-1)
- replacement index (711-8)
- replacement rate (711-1)
- report
statistical — (212-2)
- reported age (322-6)
- reporting bias
age — (152-5)
- representation
diagrammatic — (155-1)
- graphic — (155-1)
- representative sample (163-1)
- reproduce (601-2*)
- reproduction (601-2)
- — (710-1)
- gross — (710-3)
- net — (710-4)
- reproduction rate (711-1)
- cohort — (711-7)
- female — (711-2)
- generation — (711-7)
- gross — (711-4)
- joint — (711-6)
- male (711-5)
- maternal — (711-2)
- net — (711-3)
- nuptial — (712-3)
- paternal — (711-5)
- period gross — (639-4*)
- reproductive (601-2*)
- reproductive ages (620-1*)
- reproductive behavior (624-1)
- reproductive history (638-1)
- reproductive intention (625-2*)
- reproductive period (620-1)
- reproductivity (710-1*)
- repudiate (511-3)
- repulsion (819-2)
- reservation (304-4)
- reserve
labor — ★ (351-10)
- native — (304-4)
- reside (310-6*)
- residence (310-6*)
- change of — (213-5)
- duration of — (804-2)
- latest change of — (802-7)
- legal — (310-6*)
- place of — (310-6)
- place of — at a fixed date (802-1)
- place of current — (802-3)
- place of last previous — (802-2)
- previous place of — (802-2)
- tabulation by place of — (212-3)
- usual — (310-6*)
- residence permit (812-10)
- resident
other — of group quarters (310-7*)
- permanent — (310-3)
- resident alien (331-7)
- resident population (310-1)
- residential mobility (803-6)
- residual family (“Restfamilie”) ★ (115-5)
- residual fecundability (638-7)
- residual method (814-1)
- residue
method of residues (814-1)
- resource (901-1)
- renewable — (710-2)
- respondent (204-1)
- non- — (205-5)
- response
non- — (205-3)
- non- — (230-11)
- response error (164-8)
- responsible parenthood (625-1)
- restraint
moral — (905-8)
- result (132-6)
- results
processed — (228-6)
- retention rate (347-3)
- retired person (358-6)
- retirement (361-4)
- retirement age ★ (324-7)
- retirement migration (806-7)
- retroprojection (720-1*)
- retrospective survey (203-8)
- return migrant (804-3*)
- return migration (804-3)
- reunification
family — ★ (806-9)
- reverse survival ratio method (814-3*)
- revised rate (136-5)
- revoke (331-4)
- revolution
vital — (907-1*)
- rhythm method (628-4)
- rising
young and — generation ★ (116-6)
- risk (134-2)
- exposed to — (134-3)
- risk of conception
exposure to the — (613-1)
- risk of disability (426-5)
- rite (341-4)
- roll
nominal — ★ (215-10)
- taxation — (214-10)
- room (120-2)
- class- — (345-4)
- roomer (110-8)
- round number (152-1)
- rural (311-3*)
- rural area (311-1)
- rural population (311-3)
- rural-urban fringe (307-3*)
- rural-urban migration (804-5)
S
- safe period (628-5)
- saline injection
abortion by — (604-9*)
- salpingectomy (631-5)
- sample (160-2)
- probability — (161-1)
- random — (161-1)
- representative (163-1)
- sub- — (162-5)
- systematic — (161-6)
- sample survey (202-6)
- sampling
area — (162-7)
- cluster — (161-8)
- multi-stage — (162-3)
- simple random — (161-4)
- stratified random — (162-1)
- sampling error (164-3)
- sampling fraction (161-5)
- sampling frame (161-3)
- sampling plan (160-5)
- sampling procedure (160-1)
- sampling quota (163-2)
- sampling ratio (161-5)
- sampling scheme (160-5)
- sampling unit (160-4)
- sanction (933-10)
- satellite community (307-3*)
- satus
widowhood — (430-1*)
- saving (901-4)
- scatter (141-1)
- scatter of the population (312-3)
- schedule (206-2)
- census — (206-2)
- collective — (207-3)
- enumerator's — (207-3)
- fertility — (639-2)
- household — (207-2)
- individual — (207-1)
- institutional — (207-4)
- survivorship — of non-migrants (817-5)
- scheme
coding — (221-3)
- sampling — (160-5)
- scholar (345-2*)
- scholarship holder (345-2*)
- scholarship student (345-2*)
- school
age at leaving — (342-6)
- current — statistics (346-1)
- elementary — (344-3)
- nursery — (344-2)
- pre- — child (323-7)
- pre- — education (343-4)
- primary — (344-3)
- professional — (344-6)
- secondary — (344-4)
- technical — ★ (344-8)
- year of — completed (342-5)
- school age (346-6)
- school leaving (347-1)
- school life
table of — (347-4)
- school year
proportion repeating a — ★ (347-7)
- school-age child (323-8)
- school-age population (346-7)
- seasonal agricultural laborer (356-4*)
- seasonal fluctuations (150-5)
- seasonal migration (801-10*)
- seasonal move (801-10)
- seasonal movement (801-10*)
- seat
county — (306-6)
- second birth interval (612-3*)
- second generation ★ (116-9)
- secondary cause of death (421-9)
- secondary education (343-7)
- secondary family ★ (111-10)
- secondary migrant (804-4*)
- — (806-4*)
- secondary migration (804-4*)
- — (806-4)
- secondary nucleus (111-8)
- secondary school (344-4)
- secondary sector (357-8)
- secondary sterility (621-9)
- secondary unit (162-6)
- sect (341-5)
- sectional
cross- — analysis (103-5)
- sector
primary — (357-7)
- secondary — (357-8)
- tertiary — (357-9)
- traditional — (357-10)
- sedentary (304-1)
- seeker
first-time job — ★ (351-11)
- seeking work (351-4)
- segregate (810-5*)
- segregation (810-5)
- selection (914-1)
- group of persons among whom mate — takes place ★ (514-5)
- mate — (514-6)
- selective immigration (811-3)
- selective value (914-2)
- mean — (914-3)
- selectivity of migration (816-7)
- self-enumeration (203-12)
- self-governing territory (305-7)
- non- — (305-8)
- self-supporting person (358-2)
- semi-interquartile range (141-6)
- semi-literate (342-3*)
- semi-logarithmic graph (155-5)
- semi-nomadic (304-3)
- semi-skilled worker (354-6)
- semi-stable population ★ (703-8)
- semi-urban population (311-5)
- senescence (327-1)
- senescent (327-1*)
- senile (424-7*)
- senility (424-7)
- senior service ★ (355-7)
- separated person (512-6)
- separation (512-2)
- de facto — (512-3)
- judicial — (512-5)
- legal — (512-5)
- separation factor (412-6)
- separation from the labor force (361-3)
- age at — (362-3)
- mean age at — (362-5)
- probability of — (361-8)
- rate of — (361-7)
- serial migration (804-6)
- — ★ (804-7)
- series (131-2)
- time — (150-1)
- servant
civil — (357-5*)
- service
child welfare services (932-4)
- family-planning services (933-3)
- infant welfare services (932-4)
- middle — ★ (355-5)
- senior — ★ (355-7)
- simple or lower — ★ (355-4)
- upper — ★ (355-6)
- service worker (354-2*)
- services
maternity — (932-3)
- set (140-7)
- settled (304-1)
- settlement (312-4)
- dispersed — (312-6)
- grouped — (312-5)
- sex (320-2)
- sex distribution (320-1)
- sex ratio (320-5)
- sex structure (320-1)
- sex-age-specific death rate (401-6)
- sex-specific marriage rate (520-5)
- sexual intercourse (627-2)
- share-cropper (356-3)
- sheath (629-1)
- short-term forecast (720-4)
- sib (113-4)
- sibling (113-4)
- sickness (420-2)
- significance
level of — (164-7)
- significant difference (164-6)
- simple family (113-1*)
- simple or lower service ★ (355-4)
- simple random sampling (161-4)
- simulation (730-6)
- macrosimulation (730-7)
- microsimulation (730-8)
- single (515-2)
- number remaining — (522-3)
- proportion — (521-4)
- proportion remaining — (521-2)
- single birth (606-1)
- single cause of death (421-4)
- single delivery (606-1)
- single parent family ★ (115-4)
- single survival
probability of — (522-7)
- single survivor (522-5)
- singulate mean age at marriage (521-8)
- sister (113-3)
- half- — (113-6)
- situation
current demographic — ★ (102-8)
- size (101-7)
- average family — (637-3)
- desired family — (625-2*)
- household — (111-11)
- ideal family — (625-2*)
- intened family — (625-2*)
- skill (354-4)
- skilled worker (354-5)
- semi- — (354-6)
- un — (354-7)
- slip (215-1)
- baptism — (215-2)
- burial — (215-4)
- marriage — (215-3)
- smallholder (356-3*)
- smooth (151-1*)
- smoothed (151-1*)
- smoothing (151-1)
- social class (920-2)
- social demography (104-2)
- social mobility (920-4)
- inter-generational — (920-7)
- intra-generational — (920-7*)
- social optimum (902-5*)
- social pressure (933-9)
- social security record (812-4)
- social status category (353-6)
- social status group (920-1)
- social stratification (920-3)
- social welfare program (933-5)
- socioeconomic group (920-1)
- software (225-4)
- son (112-6)
- sort (222-1*)
- sorter
card — (224-6)
- sorting (222-1)
- spacing
birth — (612-1*)
- span
life (434-4)
- spatial distribution (301-3)
- spatial distribution of the population (301-1)
- spatial mobility (801-1)
- specialist
computer — (225-6)
- specific rate (134-6)
- specific ratio (133-1)
- specified
mis — (230-11)
- not — (230-11)
- sperm cell (602-4)
- spermatozoon (602-4)
- spermicide (629-9)
- spinster (515-4)
- sponge (629-4)
- spontaneous abortion (604-1)
- spontaneous migration (806-1)
- spouse (501-5)
- age difference between spouses (520-11)
- square
method of least squares (151-4)
- squatter (121-4)
- stability (703-2*)
- stabilize (703-2*)
- stable (703-2*)
- stable age distribution (703-3)
- stable birth rate (703-1*)
- stable death rate (703-1*)
- stable population (703-2)
- quasi- — (703-7)
- semi- — ★ (703-8)
- stable population analysis (703-2*)
- staff
executive — (355-2)
- managerial — (355-1)
- stage
post-transitional — (907-3)
- pre-transitional — (907-2)
- stage migration (804-6)
- stage of life (323-1)
- standard deviation (141-9)
- standard error (164-4)
- standard metropolitan statistical area (307-4*)
- standard mortality rate (403-6)
- standard of living (902-6)
- standard population (403-2)
- standard rate ★ (136-9)
- standardization (403-1*)
- direct method of — (403-3)
- indirect method of — (403-4)
- standardize (403-1*)
- standardized (403-1*)
- standardized death rate
indirectly — (403-5*)
- standardized mortality rate (403-1)
- standardized mortality ratio (403-5*)
- standardized rate (136-7)
- standardized rate birth (632-7)
- state (303-2)
- — (305-3)
- — (305-5)
- federal — (305-4)
- morbid — (420-7)
- multi- — method ★ (153-6)
- multi-national — (330-6)
- state in employment (353-1*)
- state of the population (201-8)
- stated
not — (230-11)
- stated age (322-6)
- stateless (330-3)
- statement (206-5)
- anonymous — ★ (215-9)
- static model (730-2)
- stationarity (703-6*)
- stationary (703-6*)
- stationary population (433-3*)
- — (703-6)
- death rate of the — (433-5)
- statistical (130-1*)
- statistical analysis ★ (130-10)
- statistical area (307-4*)
- standard metropolitan — (307-4*)
- statistical chart (155-3)
- statistical department (204-4)
- statistical estimation (164-2)
- statistical family (115-1)
- statistical package (227-4)
- statistical report (212-2)
- statistical table (131-4)
- statistical unit (110-1)
- statistician (130-1*)
- statistics (130-1*)
- current population — (201-1)
- current school — (346-1)
- demographic — (102-4)
- demographic — (130-1)
- descriptive (223-2)
- education — (342-2*)
- educational attainment — (342-4)
- epidemiological — (423-6)
- health — (421-1)
- literacy — (342-2*)
- migration — (812-1)
- morbidity — (420-6)
- order — (142-1)
- place-of-birth — (813-3)
- place-of-birth — ★ (814-4)
- population — (102-4)
- population — (130-1)
- registration — (212-1)
- religious — (341-1)
- vital — (212-1)
- vital — method (814-2)
- statistics of language (340-6)
- statistics of population change (201-2)
- statistics on in-migrants (813-2)
- statistics on migrants (813-1)
- statistics on out-migrants (813-2)
- status (353-1*)
- civil — (211-2)
- conjugal — (515-1)
- educational — (342-1)
- family planning — (624-4*)
- industrial — (353-1*)
- marital — (515-1)
- orphanhood — (430-1*)
- social — category (353-6)
- social — group (920-1)
- work — (353-1)
- status animarum (214-6)
- stay
duration of — (801-8)
- duration of — (804-2)
- stem family ★ (113-10)
- step migration (804-6)
- sterile (621-2*)
- sterile period (622-1)
- sterility (621-2)
- adolescent — (622-8)
- permanent — (621-7)
- post-partum — (622-5*)
- primary — (621-8)
- secondary — (621-9)
- temporary — (621-5)
- sterilization (631-1)
- eugenic — (913-4)
- steroids
contraception by — (630-3)
- stillbirth (411-5)
- false — (411-5*)
- stillbirth rate (413-1*)
- stillbirth ratio (413-2*)
- stillborn (411-5*)
- stochastic model (730-5)
- storage
mass — device (226-3)
- straddling interval (612-6)
- stratification (162-1*)
- social — (920-3)
- stratified random sampling (162-1)
- stratify (162-1*)
- stratum (162-2)
- stream
counterstream (803-11)
- dominant — (803-10)
- effectiveness of migration streams (818-4)
- migration — (803-9)
- net — (805-9)
- structural effect ★ (701-12)
- structure (101-2)
- — (144-4)
- age — (325-6)
- gene — (914-6)
- genotypic — (914-7)
- one-household — (120-1*)
- sex — (320-1)
- structure of causes of death ★ (421-12)
- student (345-6)
- graduate — (345-6*)
- post-graduate — (345-6*)
- scholarship — (345-2*)
- studies
demographic — (102-7)
- population — (102-10)
- sub-area (302-1)
- sub-family (115-1*)
- sub-fecund (621-1*)
- sub-fecundity (621-1*)
- — (622-7)
- adolescent — (622-8)
- sub-population (101-6)
- sub-sample (162-5)
- sub-tenant (121-3)
- subject (330-1)
- subject of record (215-5)
- subsistence
means of — (905-3)
- subsistence level (905-5)
- substitution (205-9)
- suburb (307-3)
- suburban (307-3*)
- suburban zone (307-3*)
- suburbanization (307-3*)
- successive births
interval betwwen — (612-4)
- successive generations
mean interval between — (713-1)
- suction
abortion by — (604-7*)
- suicide (422-5)
- attempted — (422-5)
- summary table (131-8)
- supervisor (204-3)
- — (355-3)
- support
self-supporting person (358-2)
- suppository (629-6)
- surface
mortality — (436-3)
- surface area (120-3)
- surplus population ★ (905-10)
- survey (203-4)
- field — (203-5)
- KAP — (626-8*)
- mailback — (203-7)
- multiround — (203-9)
- pilot — (202-7)
- post-enumeration — (202-9)
- retrospective — (203-8)
- sample — (202-6)
- survey of knowledge attitude and practice (626-8*)
- survey processing program (227-3)
- survival
group — (904-3)
- probability of — (431-6)
- probability of single — (522-7)
- survival ratio (431-7)
- average — method (814-3*)
- forward — method (814-3*)
- life table — method (814-3*)
- national census — method (814-3*)
- reverse — method (814-3*)
- survival ratio method average (814-3)
- survive
number of children surviving (430-1*)
- survivirship schedule of non-migrants (817-5)
- survivor (432-4)
- ever-married — (522-6)
- single — (522-5)
- survivorship function (432-3)
- synthesis (132-2)
- synthetic cohort (138-7)
- — (713-3)
- synthetic index ★ (132-5)
- — (133-6*)
- synthetic measure of fertility (639-3)
- system
civil registration — (211-4*)
- data base management — (227-2)
- education — (343-1)
- operating — (226-7)
- quota — (811-4)
- system analyst (225-9)
- systematic sample (161-6)
- systematically drawn (161-7)
T
- tabe
distribution of life — deaths ★ (433-2)
- table (153-1)
- abridged life — (435-2)
- all orders migration — (817-9)
- calendar-year — (153-2)
- calendar-year life — (436-1)
- cohort — (153-3)
- cohort life — (436-2)
- complete life — (435-1)
- contingency — (131-7)
- disability — (426-6)
- double decrement — (153-4)
- forecast — ★ (153-5)
- frequency — (131-7*)
- general life — (435-4)
- generation — (153-3)
- gross nuptiality — (522-1)
- individual — (131-9)
- intra-uterine mortality — (413-5)
- life — (432-1)
- life — death rate (433-5)
- life — for selected heads (435-3)
- life — function (432-2)
- life — survival ratio method (814-3*)
- model — (730-1*)
- model life — (435-5)
- multiple decrement — (153-4)
- net nuptiality — (522-4)
- non-migrant — (817-4)
- nuptiality — (522-1)
- period — (153-2)
- period life — (436-1)
- statistical — (131-4)
- summary — (131-8)
- table of school life (347-4)
- table of working life (362-1)
- table preparation (220-9)
- tablet
foam — (629-7)
- tabulate (130-6)
- tabulating machine (224-2)
- tabulation (130-6*)
- cross- — (131-7)
- tabulation by place of residence (212-3)
- tabulator (224-7)
- tampon (629-4)
- tape
magnetic — (226-4)
- target population (626-2)
- tax
hearth — list (214-9)
- tax rebate (931-4)
- tax-payer record (812-5)
- taxation roll (214-10)
- teacher (345-3)
- technical
institut ★ (344-10)
- technical college ★ (344-9)
- technical education (343-12)
- technical institute ★ (344-10)
- technical school ★ (344-8)
- teenager (324-3*)
- temperature method
basal body — (628-6)
- tempo (138-2)
- temporary absentee (310-4)
- temporary inability to conceive ★ (621-4)
- temporary move (801-6)
- temporary sterility (621-5)
- temporary union (503-6)
- tenant (121-2)
- principal — ★ (121-5)
- sub- — (121-3)
- tenant farmer (356-3)
- tenement house (120-1*)
- term
birth at — (605-3)
- full — birth (605-3)
- full — delivery (605-1)
- terminal
remote — (227-10)
- termination rate (626-6)
- territorial (301-2*)
- territory (301-2)
- — (305-6)
- non-self-governing — (305-8)
- self-governing — (305-7)
- tertiary sector (357-9)
- test
post-enumeration — (230-9)
- pre- — (202-7)
- theoretical demography (102-5)
- theories
population — (105-1)
- theoritical effectiveness (625-5)
- theory
Malthusian population — (905-2)
- theory of the demographic transition (907-1*)
- therapeutic abortion (604-3)
- time of occurrence (212-3*)
- time of registration (212-3*)
- time series (150-1)
- timesharing mode (227-9)
- timing (138-2)
- birth — (612-1)
- tongue
mother — (340-3)
- total birth rate (632-3)
- total fertility (639-4)
- total fertility rate (639-4)
- order-specific — (639-6)
- total infertility ★ (623-3)
- total legitimate fertility rate (639-5)
- total marital fertility (639-5*)
- total migration
annual rate of — (815-4)
- total number (101-7)
- total number of years lived (433-3*)
- Tourist traffic (801-12)
- town (306-4)
- county — (306-6)
- township (303-1)
- — (303-8)
- track (343-8)
- change of — (347-6)
- tract
census — (210-5)
- traditional family ★ (115-3)
- traditional sector (357-10)
- traffic
border — (803-2*)
- tourist — (801-12)
- transcription form (215-11)
- transfer
population — (808-7)
- transient (310-5)
- transit (801-11)
- transition
demographic — (907-1)
- fertility — (907-1*)
- mortality — (907-1*)
- population — (907-1)
- theory of demographic — (907-1*)
- transitional growth (907-4)
- travel (812-8*)
- — (812-8*)
- traveller (812-8)
- trend (150-2)
- tribal group (333-2*)
- tribe (333-2*)
- triplet (606-3*)
- true duration of pregnancy (603-2*)
- true logarithmic graph (155-6)
- true rate of natural increase (703-1*)
- tubal ligation (631-4)
- tubectomy (631-5)
- turnover (805-8)
- twin (606-3)
- biovular — (606-5)
- dizygotic — (606-5)
- identical — (606-4)
- monozygotic (606-4)
- uniovular (606-4)
- type of operation (220-7)
U
- ultimate frequency (138-3)
- undeclared (230-11)
- undercount (230-3)
- underdeveloped countries (903-3*)
- underemployment (351-6)
- underenumeration (230-3*)
- underestimation (230-4)
- undergraduate (345-6*)
- underlying cause of death (421-7)
- underpopulated (902-2*)
- underpopulation (902-2)
- underregistration (230-3*)
- underutilization (351-6*)
- unemployable (358-8)
- unemployed (351-3)
- unemployment (351-3*)
- hidden — ★ (351-10)
- unfurnished dwelling (121-2*)
- unintended birth (624-5*)
- union (501-3)
- conjugal — (503-8)
- consensual — (503-4)
- end of — (510-2)
- free — (503-5)
- temporary (503-6)
- uniovular twins (606-4)
- unit
administrative — (302-2)
- central processing — (226-1)
- conjugal family — (111-6*)
- dwelling — (120-1)
- primary — (162-4)
- primary family — (115-1*)
- sampling — (160-4)
- secondary — (162-6)
- statistical — (110-1)
- unit record machine (224-2)
- universe (101-3)
- university (344-5)
- university college (344-5*)
- university degree (343-11)
- unknown (230-11)
- unmarried life
expectation of — (522-8)
- unoccupied dwelling (120-7)
- unoccupied population (350-2)
- unplanned birth (624-5*)
- — (625-3*)
- unskilled worker (354-7)
- unwanted birth (624-5*)
- update (213-4)
- upper service ★ (355-6)
- upward mobility (920-5)
- urban (306-4*)
- — (311-4*)
- rural- — fringe (307-3*)
- semi- — population (311-5)
- urban area (311-2)
- urban fringe (307-3*)
- urban migration
rural- — (804-5)
- urban nucleus (307-2*)
- urban population (311-4)
- urbanization (311-4*)
- use effectiveness (625-6)
- user (225-5)
- potential — (626-2)
- proportion of current users (626-8)
- user's program (226-9)
- usual language (340-4)
- usual residence (310-6*)
- uterine (602-9*)
- utero
mortality in — (411-1)
- uterus (602-9)
- utilization
under — (351-6*)
V
- vacationing (801-12)
- vacuum aspiration
abortion by — (604-7)
- vagrant (310-8)
- valid marriage (513-2)
- validity check (221-7)
- value
fitness — (914-2)
- mean selective — (914-3)
- selective — (914-2)
- variability (141-1)
- variable (131-5)
- variance (141-8)
- variate (131-5)
- variation (141-1)
- — (150-3)
- vasectomy (631-2)
- velocity
index of net — (818-3)
- verification (130-5*)
- verifier
card — (224-5)
- verify (130-5)
- vertically extended family ★ (113-8)
- viability (603-1*)
- viable (603-1)
- non-viable (603-2)
- village (303-1*)
- — (306-3)
- violence (422-4)
- violent (422-4*)
- visa (812-9)
- exit — (812-9*)
- visiting alien (331-8)
- visitor (310-5)
- alien — (331-8)
- vital event (201-3)
- — (211-1)
- vital index (702-7)
- vital record (211-3)
- vital registration (211-4)
- vital revolution (907-1*)
- vital statistics (212-1)
- vital statistics method (814-2)
- vocational education (343-12)
- volume of migration (805-7)
- voluntary infertility ★ (623-5)
- voluntary inquiry (205-2)
- voluntary migration (806-1)
- voter registration record (812-3)
W
- wage earner (354-2*)
- wanted
number of children — (624-5)
- unwanted birth (624-5*)
- war
death or injury due to operations of — (422-7)
- war death (422-7*)
- war injury (422-7*)
- ward (306-7)
- wastage
pregnancy — (411-2*)
- wedding (501-4)
- wedlock
child born out of — (610-6)
- weigh (140-5*)
- weight (140-5)
- birth — (605-6)
- weighted average (140-4)
- weighted mean (140-4)
- weighting factor (140-5)
- welfare
child — services (932-4)
- infant — services (932-4)
- social — program (933-5)
- white
non- — (334-3)
- white collar worker (354-2*)
- white person (334-2)
- widow (510-5)
- widowed person (510-6)
- widower (510-4)
- widowhood (510-7)
- mean interval between — and remarriage (524-4)
- widowhood status (430-1*)
- wife (501-7)
- withdrawal (628-3)
- witness (215-8)
- woman (321-2)
- child-woman ratio (632-8)
- married — (515-7)
- mean number of children ever born per — (637-2)
- one-parity — (611-9*)
- zero-parity — (611-9*)
- woman years (633-3)
- womb (602-9)
- work
journey to — (801-9*)
- seeking — (351-4)
- work incapacity ★ (426-8)
- work status (353-1)
- worker (351-1)
- agricultural — (357-3)
- blue collar — (354-2*)
- class of — (353-1*)
- clerical and office — (354-3)
- cottage — (354-1)
- family — (353-5)
- farm — (354-2*)
- field — (204-2)
- gainful — (350-1*)
- gainful — concept (350-1*)
- home — (354-1)
- independent — (353-4)
- manual — (354-2)
- marginal — (351-7)
- non-agricultural — (357-4)
- non-manual — (354-3)
- private — (357-5*)
- semi-skilled — (354-6)
- service — (354-2*)
- skilled — (354-5)
- unskilled — (354-7)
- white collar — (354-2*)
- worker on own account (353-4)
- working life (361-1)
- expectation of — (362-6)
- gross expectation of — (362-7)
- mean duration of — (362-9)
- net expectation of — (362-8)
- table of — (362-1)
- working population (350-1)
Y
- year
age reached during the — (322-4)
- calendar- — life table (436-1)
- calendar- — table (153-2)
- complete — (322-2)
- five- — age group (325-3)
- individual — of age (325-1)
- mid- — population (135-6)
- person- — (135-7)
- proportion repeating a school — ★ (347-7)
- woman years (633-3)
- year lived
total number of years lived (433-3*)
- year of age
death under one — (412-1)
- year of birth (325-5)
- year of school completed (342-5)
- young and rising generation ★ (116-6)
- young person (324-3)
- young population (326-6)
- younging (326-4*)
- youth (324-1)
- youth mortality ★ (414-3)
Z
- zero population growth ★ (701-10)
- zero-parity woman (611-9*)
- zone (302-4)
- suburban — (307-3*)
- zygote (602-3*)
- — (911-7)