sualme <susana.alberichmesa <at> osakidetza.net> writes: > > Hello, > I am working in a longitudinal study, with a categorical variable as a > dependent variable (alcohol consumption: no use, use, abuse and dependence) > with repeated measures (baseline, 1 year, 2 years). Besides I have another > variable with two groups: control and experimental. > > I would like to analyze the evolution in each group, I have though in lme, > but I am not sure if I can do an lme with a categorical vble as dependent > vble, or it must be continuous. If so, which model could I do? I have read > something about lmer, but doesn`t give p-values.. > > Thanks in advance!
I'd take a look at the clmm function in the 'ordinal' package, or possibly the MCMCglmm package, and consider posting future questions to r-sig-mixed-mod...@r-project.org . (Your response variable is probably considered 'ordinal', i.e. ordered categorical, which may be helpful terminology in searching for solutions.) Ben Bolker ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
