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Re: Antwort: st: interactive Wald test?


From   Jeph Herrin <stata@spandrel.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: Antwort: st: interactive Wald test?
Date   Fri, 23 Jul 2010 08:56:48 -0400

Thanks - that was it, sort of. My matrix V had the correct
row names, but the column names were generic.

cheers,
Jeph

On 7/22/2010 12:59 PM, Richard Ochmann wrote:
...

Every time when I had the error message "name conflict" after -ereturn
post-, the reason always was a conflict in the colnames and rownames of
the matrices replacing and to be replaced.
Watch out that these exactly coincide over these matrices.

best, rich


owner-statalist@hsphsun2.harvard.edu schrieb am 22.07.2010 17:32:47:

Someone has given me some parameter estimates - including the variance/
covariance matrices  - for a number of models. I would like to
perform a few Wald tests on groups of independent variables, in the
manner of -testparm-.  I know the formula for a Wald test and how
to go about programming this, but would surely prefer to find a
pre-existing solution. First question, does someone know one?

My proposed solution, which may not be the best, is to store my
matrices b and V in e(b) and e(V), via -ereturn post-, and go
from there. However, this always returns an error:

   . ereturn post b V
   name conflict
   r(507);

-ereturn list- shows no stored estimates; using simply -ereturn post-
with no arguments gives no error but also creates no estimates.
Thoughts on what the name conflict is, and what I am doing wrong?

thanks,
Jeph


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