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Heterogeneity Component
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Journal Article
Demography (1999) 36 (4): 535–551.
Published: 01 November 1999
... of one outcome as a predictor of another by taking into account both heterogeneity across individuals due to unmeasured factors that may affect all these outcomes and the correlation in the unmeasured factors across processes. We find that these heterogeneity components are strongly and positively...
Journal Article
Demography (1995) 32 (3): 437–457.
Published: 01 August 1995
... newly developed econometric methods to explicitly address the endogeneity of cohabitation before marriage in the hazard of marital disruption by allowing the unobserved heterogeneity components to be correlated across the decisions to cohabit and to end a marriage. These methods are applied to data from...
Journal Article
Demography (1996) 33 (3): 313–327.
Published: 01 August 1996
...)marry sooner) and positive selection on the basis of unmeasured factors that both promote good health and encourage marriage. 14 1 2011 © Population Association of America 1996 1996 Marital Status Adverse Selection Unmeasured Factor Heterogeneity Component Marriage Formation...
Journal Article
Demography (2010) 47 (3): 719–733.
Published: 01 August 2010
.... The Lillard et al. (1995) model. Lillard et al. modeled the decision to cohabit be- fore marriage and the marital dissolution process simultaneously. There is an unobserved heterogeneity term in both processes that may be correlated. Conditional on all other covariates and the person-speci¿ c components...
Journal Article
Demography (1993) 30 (4): 653–681.
Published: 01 November 1993
..., marriage duration, and length of conception interval, and the incorporation of unobserved heterogeneity in both the marriage disruption and the conception hazards equations. Each of the two heterogeneity components represents the effects of unmeasured latent risk factors which are not included in the model...
Journal Article
Demography (1988) 25 (1): 99–113.
Published: 01 February 1988
... are developed and applied to nonmetropolitan growth rates between 1950 and 1980. Internal heterogeneity was found to be an important, and sometimes even a dominant, component of change. Furthermore, the analysis sheds considerable light on the reasons for the changes in aggregate rates that marked...
Journal Article
Demography (1990) 27 (2): 185–206.
Published: 01 May 1990
... sources of variation remain poorly understood, but a considerable amount is known about one component of this heterogeneity, that due to genetic variation. It is the purpose of this article to show how this knowledge may be useful to demography. Variation has always been a central subject of genetics...
Journal Article
Demography (2024) 61 (2): 439–462.
Published: 01 April 2024
... propose to forecast mortality rates for small areas using Bayesian hierarchical models with the inclusion of a random effect capturing spatial heterogeneity. I demonstrate that this can be seamlessly integrated into the LC framework. The incorporation of spatial components into the LC family has not yet...
FIGURES
Includes: Supplementary data
Journal Article
Demography (2002) 39 (2): 311–329.
Published: 01 May 2002
... for endogeneity by specifying equations for related life-course processes, control for unobserved heterogeneity in each equation, and allow for correlation across heteroge- neity components. We refer to this model as the model with endogeneity (Model 3). The resulting model is a system of simultaneous equations...
Journal Article
Demography (2003) 40 (2): 201–216.
Published: 01 May 2003
... captures the general effect of reduction in death rates at all ages, and the second term captures the effect of heterogeneity in the pace of improvement in mortality at different ages. We extend the formula to decompose change in life expectancy into age-specific and cause-specific components, and apply...
Journal Article
Demography (2024) 61 (3): 615–626.
Published: 01 June 2024
... populations, we find considerable heterogeneity in the age profile of the components of growth and find that the most populous regions tend to have an outsized impact on national-level growth. Corresponding author: [email protected] Copyright © 2024 The Authors 2024 Variable- r...
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Includes: Supplementary data
Journal Article
Trends in Life Expectancy and Lifespan Variation by Educational Attainment: United States, 1990–2010
Demography (2016) 53 (2): 269–293.
Published: 26 January 2016
... an individual standpoint, and higher group heterogeneity from a population perspective. Using data from the National Vital Statistics System from 1990 to 2010, this is the first study to document trends in both life expectancy and S 25 —the standard deviation of age at death above 25—by educational attainment...
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Includes: Supplementary data
Journal Article
Demography (2011) 48 (1): 267–290.
Published: 23 February 2011
... developed and developing countries) over the period 1955–2003. By applying finite mixture regression models, principal component analysis, and random-effects panel regression models, we find that (1) the negative correlation between the initial adulthood mortality rate and the rate of increase in mortality...
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Journal Article
Demography (2024) 61 (1): 189–207.
Published: 01 February 2024
... of partnership status on mortality and health. We use the statistical software aML to estimate simultaneous-equations survival models ( Lillard and Panis 2003 ). Our model shares several features with that proposed by Lillard and Panis (1996) . Their strategy was to allow heterogeneity components from...
Includes: Supplementary data
Journal Article
Demography (2007) 44 (3): 623–647.
Published: 01 August 2007
... and calculated the correlations between the individual effects in the hours and wage equations. Somewhat surprisingly, the correlation between the unobserved heterogeneity components of hours and wage equations was essentially zero, both for random and xed effects. This result implies...
Journal Article
Demography (1997) 34 (4): 513–523.
Published: 01 November 1997
... the discrete-factor approximation method, let the individual's contribution to a conditional- likelihood function be L{Il). If we assume that the unob- served heterogeneity components of the error term that are correlated with each outcome, 11, follow a known continuous distribution (e.g., the normal...
Journal Article
Demography (1975) 12 (4): 645–660.
Published: 01 November 1975
... of Table 6. In all three populations the persistent heterogeneity component explains more than half of the total fecundability vari- ance. The remaining variance must therefore be due to temporary fluctua- tions in fecundability. (It is also possible that the temporary Iecundability vari- ance component...
Journal Article
Demography (1996) 33 (2): 153–165.
Published: 01 May 1996
... heterogeneity component in estimating a model of conception rates. In contrast to Rosenzweig and Schultz, both empirical and theoretical concerns govern my inclusion of observed char- acteristics of respondents as covariates in a conception-rate equation. On theoretical grounds it seems unreasonable to impose...
Journal Article
Demography (2018) 55 (5): 1935–1956.
Published: 25 September 2018
... not distinguish between health and reporting differences, which is the aim of our study. The HOPIT model consists of two components: the reporting behavior component and the own health component. Each is modeled as a generalized ordered probit model, with allowance for heterogeneous cut points (rather than...
FIGURES
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Includes: Supplementary data
Journal Article
Demography (1997) 34 (1): 115–134.
Published: 01 February 1997
... otherwise . All stochastic terms are assumed to be normally distrib- uted. The heterogeneity terms (I;,A,8h,8), and the analogous components in the other direction, may be freely correlated, but the remaining parent-specific residual components all are assumed to be independent of one other and across...
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