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Journal Article
The end of rapid increase in the use of oral anovulants? Some problems in the interpretation of time series of oral use among married women
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Demography (1970) 7 (1): 31–41.
Published: 01 February 1970
...John D. Allingham; T. R. Balakrishnan; John F. Kantner Abstract Several problems in the interpretation of time series of oral anovulant usage are discussed, among them the shifting marriage-duration distribution over time. Standardization fails to negate the conclusion that the rate of increase...
View articletitled, The end of rapid increase in the use of oral anovulants? Some problems in the interpretation of time series of oral use among married women
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for article titled, The end of rapid increase in the use of oral anovulants? Some problems in the interpretation of time series of oral use among married women
Journal Article
African-American marriage in 1910: Beneath the surface of census data
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Demography (1992) 29 (1): 1–15.
Published: 01 February 1992
... on the mortality of black men and on the ages of women at first marriage. It also compares the reported distributions of duration of first marriage to estimates based on mortality and on age at first marriage. It concludes that census reports are subject to serious error. Widowhood is overreported, and marital...
Journal Article
Parametric and Nonparametric Analysis of Life Courses: An Application to Family Formation Patterns
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Demography (2013) 50 (3): 881–902.
Published: 21 February 2013
... states (irrespective of their duration). In total, 5,987 states were observed; the top panels of the figure report the frequency of each state and its average observed duration. The bottom panel displays the distribution of the observed state sequences, (the “Other” category contains all state...
FIGURES
Journal Article
How Long Will You Be a Widow? Determinants, Trends, and Income Gradient in Widowhood Duration
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Demography (2025) 62 (2): 467–488.
Published: 01 April 2025
... determinants of expected widowhood duration at age 60 in a unified framework: (1) the degree of overlap between male and female mortality distributions, (2) the spousal age gap, and (3) the dependence of spousal mortality. Using French life tables from 1962 to 2070 and simulations based on the Gompertz law...
FIGURES
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View articletitled, How Long Will You Be a Widow? Determinants, Trends, and Income Gradient in Widowhood <span class="search-highlight">Duration</span>
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for article titled, How Long Will You Be a Widow? Determinants, Trends, and Income Gradient in Widowhood <span class="search-highlight">Duration</span>
Includes: Supplementary data
Journal Article
Relationship Between the Formation Conditions and Durations of One-Person Households in the Seoul Metropolitan Region
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Demography (2016) 53 (3): 675–697.
Published: 14 April 2016
.... The purpose of this article is to ascertain how both the socioeconomic attributes and the location characteristics of one-person households at the time of their formation affect the durations of these households under the rapidly changing Korean demography. The spatial distribution of the areal location...
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View articletitled, Relationship Between the Formation Conditions and <span class="search-highlight">Durations</span> of One-Person Households in the Seoul Metropolitan Region
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for article titled, Relationship Between the Formation Conditions and <span class="search-highlight">Durations</span> of One-Person Households in the Seoul Metropolitan Region
Journal Article
Cohort parity analysis: Statistical estimates of the extent of fertility control
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Demography (1988) 25 (2): 163–188.
Published: 01 May 1988
... of women of specified marriage ages and durations. A multinomial model of parity provides a convenient framework for the computation of distributional parameters describing the extent to which marital fertility control has been accepted and characterizing the way control has been used within specific...
Journal Article
Maximum likelihood estimates for the parameters of a continuous time model for first conception
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Demography (1972) 9 (2): 249–255.
Published: 01 May 1972
...S. N. Singh; T. Bhaduri Abstract The duration of time between two successive births or between marriage and first birth is an indicator of the level of fertility of a couple. Potter and Parker (1964) and Singh (1961, 1967) have suggested the Type I Geometric as a distribution appropriate...
Journal Article
Trends in Economic Homogamy: Changes in Assortative Mating or the Division of Labor in Marriage?
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Demography (2017) 54 (3): 985–1005.
Published: 28 April 2017
... ( 5 ) shows that changes in the distribution of marital durations ( w ti ) also affect period measures of the correlation between spouses’ earnings. Therefore, to fully decompose trends, one also needs to account for the shifting distribution of marital durations in the population. Equations...
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View articletitled, Trends in Economic Homogamy: Changes in Assortative Mating or the Division of Labor in Marriage?
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for article titled, Trends in Economic Homogamy: Changes in Assortative Mating or the Division of Labor in Marriage?
Includes: Supplementary data
Journal Article
The duration of breast-feeding: How is it affected by biological, sociodemographic, health sector, and food industry factors?
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Demography (1993) 30 (1): 63–80.
Published: 01 February 1993
... sector, and food industry practices on the duration of full and partial breast-feeding in a sample of more than 2,600 infants from the Cebu Longitudinal Health and Nutrition Survey. Food industry and health sector practices (such as distribution of free samples of infant formula), the mother’s perception...
View articletitled, The <span class="search-highlight">duration</span> of breast-feeding: How is it affected by biological, sociodemographic, health sector, and food industry factors?
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for article titled, The <span class="search-highlight">duration</span> of breast-feeding: How is it affected by biological, sociodemographic, health sector, and food industry factors?
Journal Article
Effects of various factors on selection for family planning status and natural fecundability: A simulation study
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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
Bombay migration study: A pilot analysis of migration to an Asian metropolis
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Demography (1966) 3 (2): 378–392.
Published: 01 June 1966
.... Migrants were defined by birthplace and cross-classified by age and duration of residence in Bombay. Data (1901–61) on net migration (obtained from successive age-sex distributions) are analyzed in terms of underlying trends to give historical perspective to the analysis of recent data with special...
Journal Article
Indirect Estimation of the Timing of First Union Dissolution With Incomplete Marriage Histories
Open Access
Demography (2023) 60 (2): 411–430.
Published: 01 April 2023
... by duration since first union, classified by union dissolution status (intact vs. dissolved first union). It then uses the relationships between life table functions to generate the distribution of marriages ending each year ( θ t ) for a given marriage cohort. Using this distribution, ILTUD generates quantum...
FIGURES
View articletitled, Indirect Estimation of the Timing of First Union Dissolution With Incomplete Marriage Histories
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for article titled, Indirect Estimation of the Timing of First Union Dissolution With Incomplete Marriage Histories
Includes: Supplementary data
Journal Article
Age-Specific Death Rates With Tobacco Smoking and Occupational Activity: Sensitivity to Sample Length, Functional Form, and Unobserved Frailty
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Demography (1990) 27 (2): 267–284.
Published: 01 May 1990
... Investigation . New York : Columbia University Press Heckman J. , & Singer B. ( 1984 ). A Method for Minimizing the Impact of Distributional Assumptions in Econometric Models for Duration Data . Econometrica , 52 , 271 – 320 . 10.2307/1911491 Kahn H. ( 1966 ). The Dorn...
View articletitled, Age-Specific Death Rates With Tobacco Smoking and Occupational Activity: Sensitivity to Sample Length, Functional Form, and Unobserved Frailty
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for article titled, Age-Specific Death Rates With Tobacco Smoking and Occupational Activity: Sensitivity to Sample Length, Functional Form, and Unobserved Frailty
Journal Article
The incidence of divorce within cohorts of American marriages contracted since the civil war
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Demography (1979) 16 (1): 1–25.
Published: 01 February 1979
... in several sources. The ones used in the pres- ent series may be found in the Appendix.' We have used a variety of estimates of the distribution of divorces by duration of marriage c(x, t) to apportion D t) into D(x, t) for all years. Vital statistics esti- mates of these distributions are available for most...
Journal Article
Conceptive Delay, Nonsusceptible Period, and Cohort Fertility Patterns
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Demography (1975) 12 (1): 143–153.
Published: 01 February 1975
... (or cumulative fertility rate) according to duration of marriage by standardizing the completed size to unity and adjusting so that the time (dura- tion) scale would fit the proportional distribution of births (see also Murphy and Nagnur, 1972). All these attempts essentially centered on fitting fertility...
Journal Article
Regression-like Analysis of Birth Interval Sequences
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Demography (1980) 17 (2): 207–223.
Published: 01 May 1980
...Henry I. Braun Abstract Employing a family of generalized linear models for the gamma distribution, the structure of birth interval data derived from three historical populations is examined. The relative importance of such factors as current age, parity of the mother, and duration of marriage...
Journal Article
Educational attainment as a selective factor in marital status transitions in the United States
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Demography (1967) 4 (1): 108–125.
Published: 01 March 1967
... for women and 21 for men). The distribution of percents single by age was about the same in all three censuses for persons with elementary schooling. A trend toward smaller proportions of the single, both men and women, among young persons with college education continued for the entire twenty-year period...
Journal Article
Socio-economic correlates of fecundability in a sample of taiwanese women
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Demography (1969) 6 (1): 75–90.
Published: 01 February 1969
... fecundability for this group of women is estimated by fitting a Type I geometric model to the observed fre- quency distribution of conceptive de- lays, that is, the duration between the woman's marriage and the beginning of her first conception. The Type I geo- metric model, the procedures assumed for fitting...
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in The Impact of Childhood Mortality on Fertility in Rural Tanzania: Evidence From the Ifakara and Rufiji Health and Demographic Surveillance Systems
> Demography
Published: 01 December 2023
Journal Article
HIV and population dynamics: A general model and maximum-likelihood standards for East Africa
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Demography (2003) 40 (2): 217–245.
Published: 01 May 2003
... women require further distribution between HIV-negative and HIV-positive births, which is accomplished here through the application of a duration-specific vertical transmission rate, V(d,t 5,5) to B1(d,t 5,5). Finally, the pro- portion of births that survive to time t is estimated separately...
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