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Search Results for Covariate Effect
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Journal Article
Estimation of Covariate Effects With Current Status Data and Differential Mortality
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Demography (2013) 50 (2): 521–544.
Published: 18 November 2012
... (Puerto Rico). Because diabetes in these countries has a relatively early onset, the set of observed incidence rates is too incomplete to retrieve reliable effects of covariates. Additional information can be obtained online ( http://prehco.rcm.upr.edu for PREHCO, and http://www.mhas.pop.upenn.edu...
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View articletitled, Estimation of <span class="search-highlight">Covariate</span> <span class="search-highlight">Effects</span> With Current Status Data and Differential Mortality
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Journal Article
A decomposition method based on a model of continuous change
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Demography (2008) 45 (4): 785–801.
Published: 01 November 2008
... that co- variates change continuously along an actual or hypothetical dimension. This assumption leads to a general model that logically justi es the additivity of covariate effects and the elimination of inter- action terms, even if the dependent variable itself is a nonadditive function. A comparison...
Journal Article
Knox meets Cox: Adapting epidemiological space-time statistics to demographic studies
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Demography (2010) 47 (3): 629–650.
Published: 01 August 2010
... the modified test to data on the onset of fertility decline in Brazil over 1960–2000 and show how the modified method can produce maps indicating where and when diffusion effects seem strongest, net of covariate effects. 27 1 2011 © Population Association of America 2010 2010 Total Fertility...
Journal Article
What are the determinants of delayed childbearing and permanent childlessness in the United States?
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Demography (1984) 21 (4): 591–611.
Published: 01 November 1984
.... 9 1 2011 © Population Association of America 1984 1984 Current Population Survey Covariate Effect Recent Cohort National Longitudinal Survey Race Effect References
Blake J. ( 1979 ). Is Zero Preferred? American Attitudes Toward Childlessness in the 1970’s...
Journal Article
Sibling models of socioeconomic effects on the timing of first premarital birth
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Demography (1997) 34 (4): 493–511.
Published: 01 November 1997
... births. Results show a moderate correlated risk of premarital childbearing among siblings after controlling for the effects of measured covariates. The effect of older sisters’ out-of-wedlock childbearing on the timing of younger sisters’ premarital birth is overestimated when shared unmeasured family...
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
... which factors explain the pairwise dissimilarities observed between life courses. Permutation distribution inference allows for the study of the statistical significance of the effect of a set of covariates of interest. We then develop a parametric model for the sequence-generating process that can...
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Journal Article
An investigation of racial and ethnic disparities in birth weight in Chicago neighborhoods
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Demography (2003) 40 (4): 701–725.
Published: 01 November 2003
... approach, however, is that it constrains the effects of all covariates to be identical for the different racial and ethnic groups. Imposing this structure on the model may be wrong and potentially misleading if the effects of covariates are substantially different across racial and ethnic groups. One...
Journal Article
Demography (2021) 58 (1): 295–320.
Published: 01 February 2021
... to estimate the effect of fertility preferences and contraceptive intentions on the cumulative incidence function of contraceptive behaviors, accounting for intervening pregnancy, female background covariates, loss to follow-up, and complex survey design. We find that women's contraceptive intentions...
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View articletitled, A Panel Study of Fertility Preferences and Contraceptive Dynamics in the Presence of Competing Pregnancy Risks in Uganda
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for article titled, A Panel Study of Fertility Preferences and Contraceptive Dynamics in the Presence of Competing Pregnancy Risks in Uganda
Includes: Supplementary data
Journal Article
Modeling transition rates using panel current-status data: How serious is the bias?
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Demography (2009) 46 (2): 371–386.
Published: 01 May 2009
..., although here the baseline hazard is de ned on an age axis rather than a duration-of-exposure axis. The proportional-effects parameters, bij2, adjust the baseline hazards upward or downward according to their signs and the magnitudes of the elements of the vector of covariates, X. Furthermore...
Journal Article
Stability across cohorts in divorce risk factors
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Demography (2002) 39 (2): 331–351.
Published: 01 May 2002
...Jay D. Teachman Abstract Over the past quarter-century, many covariates of divorce have been identified. However, the extent to which the effects of these covariates remain constant across time is not known. In this article, I examine the stability of the effects of a wide range of divorce...
Journal Article
A hazards-Model analysis of the covariates of infant and child mortality in Sri Lanka
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Demography (1983) 20 (1): 1–26.
Published: 01 February 1983
... provided a means for assessing simulta- neously the effects of several factors on mortality rates (e.g., Kalbfleisch and Prentice, 1980; Menken et aI., 1981). The purpose of this paper is to show how the parameters of life tables with covariates can be estimated using standard comput- er packages...
Journal Article
The Location of Displaced New Orleans Residents in the Year After Hurricane Katrina
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Demography (2014) 51 (3): 753–775.
Published: 06 March 2014
... in the South. The observed race disparity was not accounted for by any of the demographic or socioeconomic covariates in the multinomial logistic regression models. Consistent with hypothesized effects, we found that following Hurricane Katrina, young adults (aged 25–39) were more likely to move further away...
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View articletitled, The Location of Displaced New Orleans Residents in the Year After Hurricane Katrina
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for article titled, The Location of Displaced New Orleans Residents in the Year After Hurricane Katrina
Includes: Supplementary data
Journal Article
Community characteristics, individual and household attributes, and child survival in brazil
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Demography (1996) 33 (2): 211–229.
Published: 01 May 1996
... survival chances, and to analyze how household variables modify the effects of community characteristics. The interaction effects we examine help to explain the effects of community characteristics on child survival chances by illuminating the most likely pathways through which these covariates operate...
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
... by maximizing the partial likelihood function. The resulting estimates of the covariate effects are still consistent and asymptotically normal. Unobserved heterogeneity is not controlled for explicitly in the Cox model but is of major interest to us. Heckman and Singer (1984) proposed a more general...
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
Linked Lives, Dependent Demise? Survival Analysis of Husbands and Wives
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Demography (1994) 31 (1): 81–93.
Published: 01 February 1994
... values, are to be compared to one another. In addition, the model does not assume (but does not preclude) that events of one type must be observed if events of another type also are to be observed. These features allow one to test explicitly for similar causal effects of covariates across husbands...
Journal Article
Urbanization and fertility: An event-history analysis of Coastal Ghana
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Demography (2008) 45 (4): 803–816.
Published: 01 November 2008
... residence covariates) to be associated with a delayed onset of childbearing and a steeper reduction in fertility at older ages and higher parities, where fertility control is more likely to be manifest. Thus, we expect to see an effect of urbanization in the rst birth as well as in higher-order births...
Journal Article
Demography (2023) 60 (6): 1721–1746.
Published: 01 December 2023
... Tanzanian mothers between 2000 and 2015. Generalized hazard regression analyses assess the effect of child loss on the hazard of conception, adjusting for child-level, mother-level, and contextual covariates. Results show that time to conception is most reduced if an index child dies during the subsequent...
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View articletitled, The Impact of Childhood Mortality on Fertility in Rural Tanzania: Evidence From the Ifakara and Rufiji Health and Demographic Surveillance Systems
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for article titled, The Impact of Childhood Mortality on Fertility in Rural Tanzania: Evidence From the Ifakara and Rufiji Health and Demographic Surveillance Systems
Journal Article
Maternal Education, Birth Weight, and Infant Mortality in the United States
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Demography (2013) 50 (2): 615–635.
Published: 17 October 2012
... development separately by using covariate density defined mixture of logistic regressions (CDDmlr). Among normal births, mean birth weight increases significantly (by 27–108 g) with higher maternal education. Mortality declines significantly (by a factor of 0.40–0.96) through the direct effect of education...
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Journal Article
Son targeting fertility behavior: Some consequences and determinants
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Demography (2010) 47 (2): 521–536.
Published: 01 May 2010
... likelihood estimation, we study the effect of covariates on son targeting fertility behavior in India, a country that displays significant sibling and birth-order effects. We find that income and geographic location of families significantly affect son targeting behavior. 27 1 2011 © Population...
Journal Article
The association of childhood socioeconomic conditions with healthy longevity at the oldest-old ages in China
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Demography (2007) 44 (3): 497–518.
Published: 01 August 2007
... but mostly not statistically significant. Multivariate survival analysis shows that better childhood socioeconomic conditions in general tend to reduce the four-year period mortality risk among the oldest-old. But after additional controls for 14 covariates are put into the model, the effects...
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