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Continuous Time Model

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Journal Article
Demography (1972) 9 (2): 249–255.
Published: 01 May 1972
... America . Princeton : Princeton University Press . Live Birth Maximum Likelihood Estimate Geometric Distribution Continuous Time Model Moment Estimate © Population Association of America 1972 1972 30 12 2010 DEMOGRAPHY Volume 9, Number 2 May 1972 MAXIMUM LIKELIHOOD...
Journal Article
Demography (1976) 13 (1): 37–44.
Published: 01 February 1976
... of marriage report to have conceived within a short interval following marriage, this condition is not satisfied and these models become unsuitable. A probability distribution which is an inflated form of the continuous model proposed by Singh, for the time of the first conception leading to a live birth...
Journal Article
Demography (1969) 6 (2): 161–183.
Published: 01 May 1969
... system for such models is proposed, followed by a historical review of models for family building and for logically related processes. Models, differing only in treatment of time as discrete or continuous, are presented in detail for the simple case where the prob ability of conception is constant...
Journal Article
Demography (1984) 21 (2): 171–183.
Published: 01 May 1984
...Diane H. Felmlee Abstract This research examines women’s rates of leaving a job to become nonemployed (unemployed or out of the labor force) using a stochastic, continuous-time model. The data consist of employment histories of white women constructed from the National Longitudinal Survey of Young...
Journal Article
Demography (1990) 27 (1): 55–63.
Published: 01 February 1990
... Population Survey to examine this issue. Continuous-time regression models with ages and numbers of children as time-varying covariates are estimated. Net of controls for age at marriage, year of marriage, education, and marital duration, stability increases with family size up to the third child but starts...
Published: 05 May 2016
Fig. 1 Mothers’ predicted levels of feelings in time with children by employment and partnership status. Predicted values are generated from full models (Model 3, Table 2 ). Categorical controls are set to their model category, and continuous variables to their weighted mean values More
Journal Article
Demography (1978) 15 (4): 541–548.
Published: 01 November 1978
... reproduction is a product of the cooperation between the two sexes, we have attempted in this paper to define the sex-age-specific fertility rates as a function not only of age but also of time, where the latter is implicitly introduced in the model through the sex composition of the reproductive population...
Journal Article
Demography (1967) 4 (2): 553–561.
Published: 01 June 1967
... segments. Analyzing the simultaneous effects of several var- iables interacting over time can be facili- tated by the use of probability models and computer simulation. These models por- tray migration as a stochastic process, governed by probabilities which are a function of one or more independent vari...
Journal Article
Demography (2016) 53 (5): 1511–1534.
Published: 16 August 2016
... ). The goal of resilience planning is to “improve a community’s abilities to continue or restore vital services in a more timely way, and to build back better.” 3 We ran models in STATA using the procedure areg (cluster county ). 4 To estimate the model for the black population, we...
Journal Article
Demography (2013) 50 (2): 673–697.
Published: 27 October 2012
... and using regular life tables, one could project transition probabilities between health states simultaneously and use multistate life table methods. In this article, we present a theoretical framework for a multistate life table model in which the transition probabilities depend on age and calendar time...
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Includes: Supplementary data
Journal Article
Demography (2020) 57 (6): 2003–2034.
Published: 08 September 2020
... significance to the models shown in Tables 2 and 3 . 15 Alternatively, coital method use may appear to decline over time because couples shift from using only coital methods to using dual methods (coital and hormonal methods)—that is, they continue using coital methods but become increasingly...
Journal Article
Demography (2010) 47 (4): 923–934.
Published: 01 November 2010
... factors, such as individual and family background variables. We measure social interaction through the cross-sibling influences on fertility. Continuous-time hazard models are estimated separately for women’s first and second births. In addition to individual socioeconomic variables, demographic variables...
Journal Article
Demography (1971) 8 (4): 507–517.
Published: 01 November 1971
... might accomplish more. To investigate this matter, a model has been developed which incorporates the following factors: time of insertion, distribution of anovulatory length, natural fecundability and rates of effectiveness and continuation of IUD. It turns out that predicated upon the distribution...
Journal Article
Demography (2009) 46 (3): 553–574.
Published: 01 August 2009
... for Mother s Marital Dissolution (Because of Divorce or Separation) Denote by hij(t) the hazard of marital dissolution in year t of marriage i of woman j. A multilevel continuous-time event-history model allowing for unobserved heterogeneity between women may be written log hij(t) = f(t) + wij(t) + vj . (1...
Journal Article
Demography (2019) 56 (5): 1875–1897.
Published: 16 August 2019
... other biological parent, unpartnered, or repartnered. At the same time, we consider explicitly how parents’ coresidence with their own children and the presence of other children in the family household both shape and follow from parents’ union status over time. Our dynamic conceptual model thus treats...
Includes: Supplementary data
Journal Article
Demography (2022) 59 (1): 37–49.
Published: 01 February 2022
... these relationships using recent large-scale data and inverse propensity weights estimated from generalized boosted models. We find that pregnancy timing is related to maternal experience during pregnancy, but not to infant outcomes at birth—both of which are consistent with prior research. In an addition...
Includes: Supplementary data
Journal Article
Demography (1989) 26 (3): 393–409.
Published: 01 August 1989
... that are constant or follow step functions over time and Z(t) is a vector of covariates that change continuously over time. The hazard rates are estimated by using a log-linear approach. This prevents hj(t) from being less than zero and allows us to estimate a linear model of the following form: In hj(t) = a + yt...
Published: 01 August 2021
Fig. 1 Latent time-invariant and autoregressive models. To simplify the diagrams, we do not show the continuous underlying variables that correspond to the ordinal Z 1 to Z 5 variables. The εs refer to the errors of the continuous underlying variables. L j  = latent subjective health More
Journal Article
Demography (2008) 45 (4): 785–801.
Published: 01 November 2008
... in the demographic measure (dependent variable) between two populations. We propose a method of decomposition analysis based on an assumption that covariates change continuously along an actual or hypothetical dimension. This assumption leads to a general model that logically justifies the additivity of covariate...
Journal Article
Demography (2017) 54 (1): 231–257.
Published: 03 January 2017
... (Allison 2009 ). These models focus on intra-individual changes over time, relating temporal variation in subjective well-being only to temporal variation in the explanatory variables. 9 We achieved this by subtracting within-person means over time from both sides of the equation (“within...