st: -foreach- loop to fit regression at each level of a variable

[Milena Przheska <milena.przheska@cosmicdevelopment.com>]

Dear Statalist members,

I am trying to fit the same logistic regression model using different
samples from a data set and I am wondering if it is even possible to
use a -foreach- loop to estimate regression models for each sample
(indicated by a variable).

I use the variable 'sample' to indicate the sample, but instead of
writing the command over and over for each sample, I tried to do this
with a -foreach- loop, something  like this:

egen local sample_level = levelsof(sample)

foreach n of sample_level {
logistic outcome var1 var2 var3 if sample_level==`n', vce(cluster id)
}

As always, I would appreciate your help.

Thanks,
Milena
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