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

[Sergiy Radyakin <serjradyakin@gmail.com>]

Milena, is this something you are after?

set seed 123
clear
set obs 740
generate sample_level=floor(runiform()*4)
generate outcome=runiform()*4200>2000
generate var1=runiform()
generate var2=runiform()
generate var3=runiform()
generate id=floor(runiform()*2)

levelsof sample_level, local(levs)

foreach n in `levs' {
  display ""
  display "======== Regression for level: `n'
===================================="
  logistic outcome var1 var2 var3 if sample_level==`n', vce(cluster id)
}

Best, Sergiy

On Tue, Nov 19, 2013 at 7:34 AM, Milena Przheska
<milena.przheska@cosmicdevelopment.com> wrote:
> 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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