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st: QIC Program question to assess fit in xtgee


From   "Ed Levitas" <levitas@uwm.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: QIC Program question to assess fit in xtgee
Date   Fri, 2 Nov 2007 10:06:28 -0500

Statalisters,

I am attempting to use the QIC program (Stata journal v 7 #2) to assess
the fit of various models estimated via XTGEE.  However, no fit
statistics are produced after running this program.  I only receive the
following error.

p ambiguous abbreviation
r(111);

As a test, I eliminated all variables in my model containing a "p" but
still receive the same error.  Does this "p" refer to the "number of
parameters" scalar?

Can anyone suggest some possible remedies for the error?  

Thanks in advance,

Ed

****************************************
Edward Levitas, PhD
Associate Professor
Sheldon B. Lubar School of Business 
University of Wisconsin-Milwaukee
3202 N. Maryland Ave.
Milwaukee, WI  53211
ph: (414) 229-6825
fx: (414) 229-6957

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