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Re: st: missing standard errors


From   Stas Kolenikov <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: missing standard errors
Date   Fri, 9 Oct 2009 23:36:49 -0500

Something is perfectly correlated with those fixed effects. How large
is your sample, and how large are your panels?

On Fri, Oct 9, 2009 at 4:32 PM, Sue <likecats@gmail.com> wrote:
> Dear Statalisters,
>
> I searched for a similar problem but couldn't find anything. After
> splitting the sample into two, I run 4 sets of regressions with the
> same regressors, just adding different fixed effects. Depending on the
> dependent variable, between 1-3 out of the 4 regressions report the
> coefficients but not the standard errors(they are reported as (.) ). I
> use the -areg- command. Any thoughts on what might be causing this?
> There was no such problem before I split the sample. I'd appreciate
> your input.
> *
> *   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/
>



-- 
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.

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