>I want to estimate a multinomial logistic model with mlogit. But my dependent variable holds 54 categories. Now, when I try to run mlogit I am informed there are too many categories.>
Holy cow, that's a lot of alternatives. I am with Maarten on this, unless you have a truly huge (and amazingly well-conditioned) dataset you are going to be getting a lot of perfect prediction.
JV
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/