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st: Hausman Test


From   melissa Butler <melissagb@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Hausman Test
Date   Fri, 26 Jun 2009 10:15:26 -0400

Hello list,

I have one questions when I run the fixed effects models  observations
that are dropped.

>  xtlogit hicut2 $x $con, i(zipcode) fe
> note: multiple positive outcomes within groups encountered.
> note: 803 groups (1469 obs) dropped because of all positive or
>       all negative outcomes.


Is it appropriate to do the Hausman test when this happens since there
are less observation and the random effects model uses the entire
sample?

Thanks,

Melissa
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