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Re: st: How to keep track on observations used in the model


From   Fred Wolfe <fwolfe@arthritis-research.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to keep track on observations used in the model
Date   Sun, 9 Aug 2009 14:03:55 -0500

list id if !e(sample)

On Sun, Aug 9, 2009 at 1:04 PM, Supnithadnaporn,
Anupit<anupit.supnithad@gatech.edu> wrote:
> Dear Stata List Users,
>
> When I run several logit models, Stata drops 176 observations with the warning
> "varX != 0 predicts failure perfectly". I want to run the models using the same
> set of observations.
>
> How would I know which observations that Stata drops?
> Does Stata have some command to track or keep the observations that used in the
> last regression?
>
> Thank you,
> Anupit
>
>
> --
> Anupit Supnithadnaporn
> PhD Candidate
> School of Public Policy
> Georgia Institute of Technology
> D.M.Smith Building TPAC Room 018
> 685 Cherry Street
> Atlanta GA 30332
>
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>



-- 
Fred Wolfe
National Data Bank for Rheumatic Diseases
Wichita, Kansas
NDB Office  +1 316 263 2125 Ext 0
Research Office +1 316 686 9195
fwolfe@arthritis-research.org

*
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