@article{FerrerCongerRobins2016,
author = {Ferrer, E. and Conger, R. D. and Robins, R. W.},
journal = {Multivariate Behavioral Research},
abstract = {We examine the dynamics of substance use and psychiatric symptoms from childhood to adolescence using a longitudinal study of Mexican-origin families (N = 674). We present a longitudinal model capturing the trajectories of substance use and psychiatric symptoms (depression, conduct disorder), as well as the interrelations between these trajectories over time. Such a model is an extension of latent change score models designed to account for the occurrence of psychiatric symptoms while also accommodating a large amount of zeros for nonoccurrence and characterizing the changes over time in the count data. We compare this model with a more traditional approach based on a log transformation of the data. We describe differences between these approaches and highlight the benefits of using the two-part model when the data include a large amount of zeros for nonoccurrence of the behavior.},
pages = {279-295},
title = {Longitudinal dynamics of substance use and psychiatric symptoms in count data with zero inflation},
volume = {51},
year = {2016},
keywords = {symptoms,substance,dynamics,zeros,trajectories,data,model,disorder,adolescence,depression},
}

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