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Covariate Effect

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Journal Article
Demography (2013) 50 (2): 521–544.
Published: 18 November 2012
... 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/english/home.htm for MHAS). 19 Low...
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Journal Article
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
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
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
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
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
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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Includes: Supplementary data
Journal Article
Demography (2003) 40 (4): 701–725.
Published: 01 November 2003
... from a table of results and is straightforward to understand and interpret. A shortcoming of the pooled data 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...
Journal Article
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
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
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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Includes: Supplementary data
Journal Article
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
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
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...
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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Journal Article
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
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
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
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 (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...