Statalist The Stata Listserver   st: -mfx- after poisson  From 
Scott Cunningham <> Subject   st: -mfx- after poisson Date  
Sat, 29 Apr 2006 15:32:32 -0400  I have a balanced panel of 3
years with approximately 800 individuals in each year (thus 2400
observations more or less). I ran a poisson MLE with clustered
and robust standard error correction. There were several
variables as regressors, but three worth mentioning (because I
think they are causing the problem) are   That is, I am
controlling for year, state and state-year fixed effects, and am
using xi:poisson.  The ML converges without any problems. But
when I use the -mfx- post- estimation command to get the
marginal effects, it takes a long time. In fact, it's been going
for over a day and still has not produced anything. So my
question is - do I need to just be patient? Why would this take
so long? I have approximately 200 of these fixed effects, so
possibly it has something to do with this, and I just need to be
patient? Or, is this sympotmatic of