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st: RE: warning after areg
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: RE: warning after areg
Date
Wed, 31 Mar 2010 00:36:23 +0200
<>
http://www.stata.com/statalist/archive/2008-01/msg00980.html
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Urmi Bhattacharya
Sent: Mittwoch, 31. März 2010 00:32
To: [email protected]
Subject: st: warning after areg
Hi,
I am running the following regression
areg fullschool i.female i.eldstchild i.birthorder i.age
i.female#i.eldstchild,absorb (hhid) vce(cluster hhid)
and i get the following warning
Warning: variance matrix is nonsymmetric or highly singular
I am unsure as to what could be causing this.
Any ideas?
Thanks
Urmi
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