期刊
STATISTICS IN MEDICINE
卷 20, 期 4, 页码 623-639出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/sim.695
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- NIDA NIH HHS [1-R01-DA09897, 1-R01-DA0492] Funding Source: Medline
In longitudinal behavioural studies, it is common to have multiple categorical indicators for measuring a theoretical construct of interest. A latent class model is presented that accounts for the structure in a set of correlated, categorical variables measured at discrete time periods, drawing information from these Variables to form a smaller number of latent classes. The dependence of the resulting latent class model parameters on suspected factors over time is simultaneously modelled using a baseline-category logistic regression model. Estimation of the model parameters is achieved using an estimating equations procedure. A motivating example is provided from a longitudinal study of suspected linkages between monitoring or supervision by parents and the occurrence of drug use behaviours in an epidemiologic sample of school-attending youths. Copyright (C) 2001 John Wiley & Sons, Ltd.
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