Hi,

I have posted the question at cross validated, but I have not got any answer yet, so I repost here to seek help.
After reading more, I think I should rephrase the question:

I have panel data. Subjects have different choice sets at different time, so I assume I should not use -xtmlogit- which only allows for fixed choice set.
My question is whether there is any that I can do multinomial logit with varying choice set, and whether it is proper to use -cmxtmixlogit- panel data mixed multinomial logit in such case given that it relaxed IIA assumption.


I am using Stata 17.

Thanks