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st: AW: Tests of overidentifying restrictions after xtivreg2
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: AW: Tests of overidentifying restrictions after xtivreg2
Date
Mon, 1 Mar 2010 14:13:24 +0100
<>
Search the archive, and you get, for instance,
http://www.stata.com/statalist/archive/2007-07/msg00979.html
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Lim Boon Leong
Gesendet: Montag, 1. März 2010 13:48
An: [email protected]
Betreff: st: Tests of overidentifying restrictions after xtivreg2
Dear Statalisters,
I have estimated the following equation by using xtivreg2, gmm function:
xtivreg2 lsalary ceodual ........ (ownexr ownex2r ownex3r L.ldiv
L.debt=lrisk ..., fe gmm cluster(id) small ffirst
The test results turn out fine. But when I continue with the xtoverid test
after the above estimation,
xtoverid, cluster(id)
the following error message appears:
xtoverid error: internal reestimation of eqn differs from original
r(198);
I read the help file of xtoverid and it is mentioned that it supports
xtivreg2. May I know what is the problem and how to fix it?
Thank you very much in advance.
Best regards,
Lim Boon Leong
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