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Constant Fertility

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Journal Article
Demography (1968) 5 (1): 226–248.
Published: 01 March 1968
... trabajo, durante un período de sesenta años, permanecen casi idénticas en las proyecciones constante y descendente de la fecundidad. Summary There have been relatively few attempts to investigate the effect of different trends in fertility on the subsequent growth, age composition, and turnover of the...
Journal Article
Demography (1968) 5 (1): 185–197.
Published: 01 March 1968
... mortalidad, e invesamente con edad de fertilidad media programada en proyecciones de mediano termino. 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...
Journal Article
Demography (2020) 57 (2): 779–797.
Published: 24 March 2020
...Robert Schoen Abstract Cross-product ratios (αs), which are structurally analogous to odds ratios, are statistically sound and demographically meaningful measures. Assuming constant cross-product ratios in the elements of a matrix of multistate transition probabilities provides a new basis both for...
Includes: Supplementary data
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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
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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
Image
Published: 02 October 2017
holding men’s and women’s employment characteristics constant at their 1980s values in the marital fertility model. % Married and TMFR (1980s) is the TFR calculated by holding men’s and women’s employment characteristics constant at their 1980s values in both the marital status and marital fertility More
Journal Article
Demography (2021) 58 (2): 631–654.
Published: 01 April 2021
...) Constant –0.004 0.003 0.004 0.003 –0.124 –0.106 0.024 0.025 (0.058) (0.067) (0.068) (0.067) (0.152) (0.168) (0.047) (0.058) Number of Observations 103 103 103 103 103 103 103 103 R 2 .146 .091 .078 .094 .228 .207 .227 .159 Average TFR, 2008 1.377 1.377...
Includes: Supplementary data
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 (2001) 38 (1): 17–28.
Published: 01 February 2001
... 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 (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...
Journal Article
Demography (1985) 22 (4): 499–513.
Published: 01 November 1985
... of major interest are the last three, namely, the interaction terms between child care and fertility. Holding the exogenous factors constant, respon- dents who rely on relatives rather than organized facilities or babysitters are more likely to intend further births (t = -1.9 and -1.8). On the other...
Journal Article
Demography (1978) 15 (2): 139–159.
Published: 01 May 1978
... 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...
Journal Article
Demography (1977) 14 (4): 571–580.
Published: 01 November 1977
... women. The assump- tion of simple random selection, together with the treatment of sample subgroup size and reverse-survival ratios as constants instead of random variables, imply that sampling variability is slightly underestimated. The methodology is applied illustratively to fertility estimates based...
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 (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, the...
Journal Article
Demography (1967) 4 (1): 143–157.
Published: 01 March 1967
... or no tendency to decline. Between 1940 and 1960, in fact, the birth rate appears to have remained fairly constant around 43. With the death rate steadily dropping, the rate of natural increase and population growth (given a small net in-migration) has been accelerating. From a theoretical point of...
Journal Article
Demography (1967) 4 (2): 626–640.
Published: 01 June 1967
... paridad mas bajos, mientras que los que tenian eeposos nacidoe en el norte tenían los niveles más altos. Finalmente, manteniendo la edad constante, los datos muestran un consistente aumento de los promedios de paridada medidaqueaumentala permanencia en Bombay. El mismo patrón se observa para cada una de...
Journal Article
Demography (1978) 15 (4): 487–497.
Published: 01 November 1978
... natural fertility schedule chosen to construct the stan- dardized measures but that the true sched- ule is k . n(x), a constant proportion of the chosen schedule at each age. If we let D RATtt be the true value of the duration ratio for the ith woman and DRATet be the measured value, then DRATet = k...
Journal Article
Demography (1970) 7 (2): 155–167.
Published: 01 May 1970
... = 1,2, , m, (3) and the mortality schedule represented by s(b), the survival rate from birth to the first age group, and 8 (j) , the survival rate from the j-th to the (j + l)th age group, j = 1, 2, all rates being de- fined using age intervals of constant width w. Let the fertility rates concern...
Journal Article
Demography (1979) 16 (4): 493–521.
Published: 01 November 1979
...- ward increase is evident. This is possible since it has been determined that the rela- tionship of marital fertility with age is rel- atively constant for natural fertility popu- lations (Henry, 1961; Coale and Trussell, 1974; Knodel, 1977a) and thus the pro- portion of marital fertility after age 20...