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Re: st: problem with the mlogtest command
From
Richard Williams <[email protected]>
To
[email protected], [email protected]
Subject
Re: st: problem with the mlogtest command
Date
Fri, 11 Nov 2011 13:03:17 -0500
At 12:42 PM 11/11/2011, Miranda wrote:
Not sure why this happens. See below
. mlogtest, lr
Problem determining number of categories.
**** Likelihood-ratio tests for independent variables
Ho: All coefficients associated with given variable(s) are 0.
HIVtesting_tri| chi2 df P>chi2
---------+-------------------------
lrtest not valid after robust
specify force option to perform test anyway
r(198);
First off, again confirm that you have the latest and greatest
updates of Stata and spost9. On my machine,
. which mlogtest, all
c:\ado\plus\m\mlogtest.ado
*! version 1.7.6 jsl 2009-10-18
I think you'll still have the problem though. mlogtest is trying to
run lrtest, and lrtest doesn't work if you have used robust standard
errors when executing mlogit. (Unless you use the force option, and
mlogtest doesn't let you specify it.) Instead do
mlogtest, wald
Incidentally, I happen to know that these are Long and Freese
commands, but the rest of the world may not. If using user-written
commands you should specify where they came from. That is all the
more important with Long and Freese commands since multiple versions
are floating around.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME: (574)289-5227
EMAIL: [email protected]
WWW: http://www.nd.edu/~rwilliam
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