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Constant Fertility

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Journal Article
Demography (1968) 5 (1): 226–248.
Published: 01 March 1968
... representative of many countries in South Asia, the Middle East, and Africa was projected for sixty years, according to the following sets of conditions: (a) constant fertilityconstant educational enrollment rates, (b) constant fertility—improving educational enrollment rates, (c) declining fertilityconstant...
Journal Article
Demography (1968) 5 (1): 185–197.
Published: 01 March 1968
...Kogalur G. Basavarajappa Summary The significance in patterns of mortality for projections of population have been examined by projecting test stable populations classified by sex and age with constant fertility and declining mortality, according to models West, North, East, and South and according...
Journal Article
Demography (2022) 59 (3): 877–894.
Published: 01 June 2022
...Robert Schoen Abstract From a population perspective, the trajectories of both the total fertility at successive time periods and the total fertility of successive birth cohorts are derived from the same array of age-specific fertility rates. This analysis uses the assumption of constant age...
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Includes: Supplementary data
Journal Article
Demography (1973) 10 (4): 537–542.
Published: 01 November 1973
... Population Constant Fertility Negative Exponential Fertility Schedule Mortality Schedule References Coale, Ansley J. 1959. Increases in Expectation of Life and Population Growth. In the Proceedings of the International Union for the Scientific Study of Population, Vienna, 1959. Lotka...
Journal Article
Demography (1982) 19 (1): 125–133.
Published: 01 February 1982
...Thomas J. Espenshade; Leon F. Bouvier; W. Brian Arthur Abstract This paper reports on work aimed at extending stable population theory to include immigration. Its central finding is that, as long as fertility is below replacement, a constant number and age distribution of immigrants (with fixed...
Journal Article
Demography (1973) 10 (4): 543–565.
Published: 01 November 1973
...Prithwis Das Gupta Abstract Since it is logically impossible to hold constant both male and female age-specific fertility rates, the intrinsic growth rates or the net reproduction rates for males and females, based on that assumption, are internally inconsistent. The interactive two-sex model...
Journal Article
Demography (2001) 38 (1): 17–28.
Published: 01 February 2001
... of the fertility schedule to change at a constant annual rate. Because annual changes in the shape of the fertility schedules often are approximately constant except in abnormal conditions, the Bongaarts-Feeney (B-F) method is generally robust for producing reasonable estimates of the adjusted TFR(t). The adjusted...
Journal Article
Demography (1981) 18 (1): 103–122.
Published: 01 February 1981
.... Procedures allowing the estimation of intersurvey levels of fertility, child mortality and adult mortality are illustrated using data from Thailand and Peru. 30 12 2010 © Population Association of America 1981 1981 Average Parity Vital Rate Hypothetical Cohort Constant Fertility Model...
Journal Article
Demography (1991) 28 (3): 467–479.
Published: 01 August 1991
...Griffith Feeney Abstract Taiwan’s decline in fertility is studied by using period parity progression ratios. Levels of marriage and motherhood are found to have been high and essentially constant though the late 1980s, suggesting that the decline has been due almost entirely to declines in second...
Journal Article
Demography (2020) 57 (4): 1543–1569.
Published: 01 July 2020
... fertility, providing strong support for the argument that belonging to a certain social group was an important determinant of early adoption of new reproductive behavior in marriage in England and Wales. However, a relatively constant effect of lower net fertility among long-distance migrants both before...
FIGURES | View All (7)
Journal Article
Demography (1967) 4 (1): 143–157.
Published: 01 March 1967
...--40 and 1960, but that, despite pronounced resi- dential and status fertility differentials, fertility remained fairly constant at a high level during the same interval. The apparent absence of a correlation does not necessarily contradict the hypothesis that one of the consequences of develop- ment...
Journal Article
Demography (1976) 13 (2): 259–272.
Published: 01 May 1976
... fertil- ity and constant mortality tend toward stability, and, hence, approach this condi- tion. Experimentation indicates that hu- man populations of constant fertility and declining mortality are approximately semi-stable (e.g., Demeny, 1965; and United Nations, 1958, pp. 43-44). In a population...
Journal Article
Demography (1987) 24 (3): 431–438.
Published: 01 August 1987
... of the parameters explicitly. It is shown that under a constant stream of immigration, the population will asymptotically tend toward a constant, linear, or exponential behavior, depending on whether the fertility behavior is below, equal to, or above replacement level. All of the parameters are determined in terms...
Journal Article
Demography (2003) 40 (4): 621–635.
Published: 01 November 2003
... of constant vital rates. As a generalization of the fixed-rate stable model, it has great potential value in numerous areas of demographic analysis. 14 1 2011 © Population Association of America 2003 2003 Fertility Decline Vital Rate Leslie Matrix Modeling Momentum Population Momentum...
Journal Article
Demography (1978) 15 (2): 139–159.
Published: 01 May 1978
... of fertility and female employment is introduced. Contrary to the static perspective’s implication of constant effects, substantial parity differences in the estimates of parameters for both equations are reported, as are several differences between blacks and whites. On the basis of this evidence, I conclude...
Published: 02 October 2017
characteristics constant at their 1980s values in the marital fertility model. % Married and TMFR (1980s) is the TFR calculated by holding men’s employment characteristics constant at their 1980s values in both the marital status and marital fertility models More
Published: 02 October 2017
employment characteristics constant at their 1980s values in the marital fertility model. % Married and TMFR (1980s) is the TFR calculated by holding women’s employment characteristics constant at their 1980s values in both the marital status and marital fertility models More
Journal Article
Demography (1974) 11 (4): 563–585.
Published: 01 November 1974
... constraint. It synthesizes the traditional demographic analysis of age-structured renewal with constant vital rates and the economic analysis which treats population change endogenously. When cohort fertility de- pends on relative cohort size, or when period fertility depends on labor force size...
Journal Article
Demography (1969) 6 (1): 17–26.
Published: 01 February 1969
...George C. Myers; Jeffry R. Gibson Abstract Social differentials in cumulative fertility revealed by field surveys in a number of countries typically have been interpreted with the implicit assumption that the timing of childbearing within the reproductive period remains constant. However...
Journal Article
Demography (1973) 10 (1): 85–98.
Published: 01 February 1973
... with (a) constant high fertility and (b) a declining birth rate such as might occur if a successful national birth control program were instituted. The birth control program results in a higher rate of aggregate saving over the first several decades, and eventually a lower rate of saving once a higher standard...