multinomial logistic multilevel models in R

Question

Problem: I need to estimate a set of multinomial logistic multilevel models and can’t find an appropriate R package. What is the best R package to estimate such

Answer 1

I am dealing with the same issue and one possible solution I found seems to resort to the poisson (loglinear/count) equivalent of the multinomial logistic model as described in this mailinglist, these nice slides or in Agresti (2013: 353-356). Thus, it should be possible to use the glmer(... family=poisson) function from the package lme4 with some aggregation of the data.

Reference:
Agresti, A. (2013) Categorical data analysis. Hoboken, NJ: Wiley.