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Period Model

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Published: 04 February 2014
Fig. 2 Relative risks of divorce by marriage duration and period (Model 4). The reference point is at year 5 for each model. Source : Author’s calculations are based on the data from the Finnish Longitudinal Fertility Register More
Journal Article
Demography (1980) 17 (1): 115–127.
Published: 01 February 1980
...Jamie Pearl Eng Abstract This paper presents a mathematical model for changing mortality in functional form. This model may be used to obtain cohort forces of mortality and cohort survivorship functions from a period force of mortality and a period life table under conditions of gradually changing...
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Published: 07 June 2013
Fig. 4 The two-process mortality model fit to the U.S. period data from 1970 and 2005 for males and females, the corresponding fitted LARs, and the intrinsic mortality proportions More
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Published: 07 June 2013
Fig. 6 The two-mortality-process model fit to the Swedish early period (1820) and Chilean current period (2005) mortality data and the corresponding fitted LARs More
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Published: 07 June 2013
Fig. 6 The two-mortality-process model fit to the Swedish early period (1820) and Chilean current period (2005) mortality data and the corresponding fitted LARs More
Journal Article
Demography (2017) 54 (2): 721–743.
Published: 09 March 2017
... is the mechanism-based approach recently proposed and based on Pearl’s front-door criterion; this approach ensures consistent APC effect estimators in the presence of a complete set of intermediate variables between one of age, period, cohort, and the outcome of interest, as long as the assumed parametric models...
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Includes: Supplementary data
Journal Article
Demography (2016) 53 (4): 1253–1259.
Published: 15 June 2016
...) the presentation and discussion of APC results, (2) the fitting of full APC models to data for which a simpler model holds, and (3) the variation in the estimated age, period, and cohort coefficients produced by the intrinsic estimator (IE) (i.e., the “non-uniqueness property” of the IE, as referred to by Pelzer...
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Journal Article
Demography (1974) 11 (4): 563–585.
Published: 01 November 1974
... well with the theory, as the “Easterlin Hypothesis” suggests; but the period model fits better than the cohort model. 26 1 2011 © Population Association of America 1974 1974 Generational Cycle Cohort Size Period Model Cohort Model Renewal Equation References Anderson T...
Journal Article
Demography (2017) 54 (6): 2125–2158.
Published: 21 November 2017
.... Using growth curve models to analyze the Health and Retirement Study, I find that early-life exposure to the Great Depression is associated with fluid cognition, controlling for intervening factors—evidence for a critical period model. I find little support for a social trajectory model. Disadvantage...
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Includes: Supplementary data
Journal Article
Demography (2014) 51 (5): 1797–1819.
Published: 19 September 2014
...Joshua R. Goldstein; Thomas Cassidy Abstract We introduce a new formal model in which demographic behavior such as fertility is postponed by differing amounts depending only on cohort membership. The cohort-based model shows the effects of cohort shifts on period fertility measures and provides...
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Published: 19 September 2014
Fig. 4 Selected period fertility age schedules in Holland, optimal fitted schedules from the period- and cohort-shift models, and the observed schedule More
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Published: 06 March 2018
Fig. 4 Contributions of BMI and smoking to declines in biological age between Period 1 (1988–1994) and Period 2 (2007–2010). Model 1: Adjusted for covariates (race/ethnicity, socioeconomic status, and age). Model 2: Adjusted for covariates plus the interaction with BMI. Model 3: Adjusted More
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Published: 17 October 2013
Fig. 1 Equivalent patterns of age, period, and cohort effects. Rotating the period effects in a certain direction with a corresponding rotation of age and cohort effects in the opposite direction does not affect the model fit More
Journal Article
Demography (1975) 12 (3): 519–536.
Published: 01 August 1975
... of qualitative differences in the parameter estimates of five different types of migration models estimated for two different time periods, 1960 and 1970. 13 1 2011 © Population Association of America 1975 1975 Ordinary Little Square Employment Growth Migration Flow Migration Model Ordinary...
Journal Article
Demography (2003) 40 (4): 621–635.
Published: 01 November 2003
... composition that changes over time in a fully specifiable fashion. To model momentum, we use a QH population to capture the period of declining rates that arises when an initially growing stable population transitions to an ultimate stationary population (or to any other unchang- ing set of vital rates...
Journal Article
Demography (1968) 5 (1): 268–305.
Published: 01 March 1968
..., a periodic term of the same period was included in the cultural factor C, and the model was reoptimized. This resulted in a substantial reduction of the residual. A similar probing of the prosperity term, ∈ g , indicates the presence of a period one-half as long. 13 1 2011 © Population...
Journal Article
Demography (1982) 19 (3): 409–427.
Published: 01 August 1982
... either a birth cohort or calendar year arrangement of mortality data to address this controversy. The present study applies an age-period-cohort model to mortality from respiratory tuberculosis in England and Wales, Italy, and New Zealand in an attempt to separate economic influences from that of medical...
Journal Article
Demography (2007) 44 (4): 883–898.
Published: 01 November 2007
... migrated for family reasons, and immigrants who arrived in periods of high unemployment. These ndings generally support the IHCI model. 13 1 2011 © Population Association of America 2007 2007 Labor Market Human Capital Unemployment Rate Host Country Labor Migrant References...
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Published: 01 December 2022
represent risk differences between the observed preterm birth rate and the rate expected as a function of autocorrelation from January 2014 to February 2020 (the prepandemic period). Model 2 includes the following covariates: mother's age, age squared, birth parity, education, race/ethnicity, foreign-born More
Journal Article
Demography (2011) 48 (3): 815–839.
Published: 12 July 2011
... using out-of-sample projections for the period since 1980 and the period since 1995, and is found to be well calibrated. 12 5 2011 12 7 2011 © Population Association of America 2011 2011 Autoregressive model Bayesian hierarchical model Fertility projection methodology Markov...
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Includes: Supplementary data