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    Longitudinal analysis of drug use data

    Hi all, I'm looking to conduct a longitudinal analysis using data from 5 waves of an observational research study. What I'm really interested in doing is seeing how changes in parental monitoring and some other family factors (i.e., cohesion, etc.) impact drug use and negative consequences of...
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    Writing equations for latent growth curve models

    Hi all, I'm a PhD student currently working on an independent research project using latent growth curve modeling. This is my first time using this statistic, and I was wondering if anyone had a good reference that discusses how to form the statistical (i.e., mathematical) equations. I like...
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    Marginsplot for categorical by categorical interaction with multiply imputed data

    Hi all, I am trying to use marginsplots to graph a categorical by categorical variable interaction between gender (0 1) and level of drug use (0 1 2) for a logit model predicting lifetime sexual partners using multiply imputed data. I used the code from the ATS UCLA website as a template...