On Wednesday, October 1, 2003, at 02:33 AM, Paula wrote:
 I have looked for the xthausman command, but stata says "(help 
hausman for replacement)".
xthausman is described in the Stata 7 manuals [R] xtreg, and appears in 
Stata 8 as well. Unless you're using an earlier version of Stata, your 
copy of Stata is incomplete. xthausman is implemented as an ado-file.
Kit
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