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Journal Article
Demography (2023) 60 (4): 1163–1179.
Published: 01 August 2023
... settings suggests that some hormonal contraceptive methods are associated with delays in return of fecundity, yet it is unclear if these findings generalize to low- and middle-income populations, especially in regions where the injectable is widely used and pressure to bear children is significant. Using...
Includes: Supplementary data
Published: 17 June 2019
Fig. 1 CKW estimated age effects on fecundity, with and without mother-level stratification More
Journal Article
Demography (1994) 31 (3): 403–426.
Published: 01 August 1994
...James W. Wood; Darryl J. Holman; Anatoli I. Yashin; Raymond J. Peterson; Maxine Weinstein; Ming-Cheng Chang Abstract This paper develops a multistate hazards model for estimating fecundability and sterility from data on waiting times to conception. Important features of the model include separate...
Journal Article
Demography (1994) 31 (2): 321–346.
Published: 01 May 1994
...David A. Lam; Jeffrey A. Miron; Ann Riley Abstract This paper develops a model of seasonal fluctuations in fecundability, conceptions, and births. We begin with a model of individual fecundability that combines behavioral and biological components, with particular attention to the roles of coital...
Journal Article
Demography (1993) 30 (1): 81–102.
Published: 01 February 1993
...Ulla Larsen; James W. Vaupel Abstract Effective fecundability declines with age and parity. Furthermore, women differ in their effective fecundability: some women have persistently low or high monthly chances of live-birth conception. Estimates are presented concerning the magnitude...
Journal Article
Demography (1986) 23 (1): 53–66.
Published: 01 February 1986
...Jeffrey Kallan; J. Richard Udry Abstract There are substantial differences in fecundability among nine developing countries in different parts of the world. In addition, within countries, later age at marriage has a clear, positive, nonlinear effect on fecundability. Women with higher education...
Journal Article
Demography (1978) 15 (1): 87–98.
Published: 01 February 1978
...John C. Barrett Abstract The effect of various factors on selection for family planning status and for natural fecund ability is studied in a simulation that incorporates a beta distribution of fecundability among women. The mean fecundabilities of current spacers, current limiters, current...
Journal Article
Demography (1971) 8 (4): 519–524.
Published: 01 November 1971
...K. B. Pathak Abstract A probability model to estimate fecundability of a married woman has been proposed under some mild assumptions. It utilises the knowledge on the susceptibility status of the married women (including menstruation, menopause, pregnancy and amenorrhea) and therefore sets another...
Journal Article
Demography (1969) 6 (1): 75–90.
Published: 01 February 1969
...Anrudh K. Jain Abstract Estimates of fecundability (monthly probability of conception) in the absence of contraception are derived from the frequency distribution of conceptive delays immediately following marriage, reported by 2,443 married women aged 20 to 39 included in the Taichung (Taiwan...
Journal Article
Demography (1979) 16 (1): 103–119.
Published: 01 February 1979
... Components . Chicago : The University of Chicago Press . Menken Jane ( 1975 ). Estimating Fecundability . Princeton : Princeton University . Sheps Mindel C , & Menken Jane ( 1973 ). Mathematical Models of Conception and Birth . Chicago : University of Chicago Press...
Journal Article
Demography (1979) 16 (3): 475–479.
Published: 01 August 1979
... . Population Studies , 30 , 59 – 73 . 10.2307/2173488 Coale A. , & Demeny P. ( 1966 ). Regional Model Life Tables and Stable Populations . Princeton : Princeton University Press . Menken J. ( 1979 ). Seasonal Migration and Seasonal Variation in Fecundability: Effects...
Journal Article
Demography (1975) 12 (4): 645–660.
Published: 01 November 1975
...John Bongaarts Abstract A new method for the estimation of the mean and variance of fecundability is described. The data input required for this procedure is the distribution of the interval from marriage to first birth, or from the resumption of the conception risk after contraception...
Journal Article
Demography (1975) 12 (2): 291–301.
Published: 01 May 1975
... that fecundability among women varies according to a Beta distribution (with parameters a and b ), the distribution of conception times in a truncated population can be considered as truncated Type I geometric. This paper presents an algorithm to obtain the moment and maximum likelihood estimates of a and b from...
Journal Article
Demography (1970) 7 (3): 349–360.
Published: 01 August 1970
...H. Majumdar; Mindel C. Sheps Abstract In order to study distributions of fecundability, Potter and Parker fitted a Pearson Type I geometric distribution (with parameters a and b ) to data from the Princeton Fertility Study. They, and subsequently other authors, estimated a and b from the observed...
Journal Article
Demography (1970) 7 (4): 401–410.
Published: 01 November 1970
... among these variables. Two hypotheses are formulated governing the relationship of the closed and open birth intervals with the fecundability distribution of fertile women, and Parity Progression Ratios which are largely influenced by the proportion of women becoming sterile after each parity. The data...
Journal Article
Demography (2017) 54 (5): 1949–1972.
Published: 01 September 2017
... Integrated Public Use Microdata Series and estimate zero-inflated negative binomial models that simultaneously distinguish those who are infecund (vs. fecund) and estimate the number of remarital births among the fecund. Our approach allows us to evaluate historical remarital (in)fertility differences...
Journal Article
Demography (1971) 8 (4): 507–517.
Published: 01 November 1971
... when the woman is protected anyway while at the same time reducing the average span of wearing time coinciding with fecundable months when protection is needed. Thus it is not clear that early insertion yields the maximal postponement of next conception. Delaying insertion three or even six months...
Journal Article
Demography (1976) 13 (1): 65–82.
Published: 01 February 1976
...Robert G. Potter; Kathleen Ford Abstract A reanalysis of the repeat abortion experience of New York City residents during July 1, 1970 to June 30, 1972 is undertaken on the basis of a probability model that generates repeat abortion ratios as a function of assumptions about fecundity, contraceptive...
Journal Article
Demography (2014) 51 (4): 1423–1449.
Published: 15 July 2014
... explores the potential role of another set of dynamics that may drive these patterns: namely, selection into live birth. Epidemiological evidence indicates that the characteristic female survival advantage may begin before birth. If stress accompanying unstable marriages has biological effects on fecundity...
FIGURES | View All (4)
Includes: Supplementary data
Journal Article
Demography (2020) 57 (5): 1647–1680.
Published: 01 September 2020
...Marcos A. Rangel; Jenna Nobles; Amar Hamoudi Abstract Zika virus epidemics have potential large-scale population effects. Controlled studies of mice and nonhuman primates indicate that Zika affects fecundity, raising concerns about miscarriage in human populations. In regions of Brazil, Zika risk...
FIGURES | View All (7)
Includes: Supplementary data