I may be confronted with clustered data that are count data, and so need the analysis to handle clustering and to treat the count variable appropriately, for example, with Poisson model of the dependent variable. This would fall under the generalized linear model for clustered data. I would greatly appreciate it if you could tell me whether Mplus can handle clustered data with a count outcome, using an appropriate count model like Poisson.
I am wondering: 1 - Is it possible to use an offset in a multilevel model in Mplus? 2 - If the answer to 1 is yes, can you point me to any sample syntax? 3 - Why would a modeler choose to use an offset as opposed to a data transformation (e.g., arcsine) to handle a proportion dv?
Thank you in advance for any insight you have on these questions.