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.
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