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Re: st: identifying obs actually used in a Logit model


From   Eva Poen <eva.poen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: identifying obs actually used in a Logit model
Date   Thu, 23 Apr 2009 12:29:41 +0100

<>

After estimation:
gen inmodel = e(sample)
browse if inmodel

The function e(sample) returns 1 if the observation was used and 0 otherwise.

HTH,
Eva


2009/4/23 Jiang, Frank <fjiang@ivey.uwo.ca>:
> Dear listers,
>
> I am having difficulty identifying observations used in a logit model.
> The model includes several sets of dummy variables.  Some observations
> were automatically dropped because some dummy variables perfectly
> predict failures, i.e. DV==0.  As a result, the number of obs used by
> the logit model is smaller than the number of obs in the dataset.
> However, I don't know which obs were excluded.  Is there a way to
> identify the obs that were actually used in the model?
>
> Thanks
> Frank
>
>
>
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