This issue about QIC just draw my attention today. This problem
(variable name too short) has been fixed earlier.
Also, the program has been updated to include the general case of the
Negative Binomial Distribution recently, where the dispersion
parameter can be any specific value. The program can be downloaded
from SSC.
Cheers
---
Dr James Cui, PhD MMed BSc
Senior Fellow in Biostatistics and Epidemiology
Department of Epidemiology and Preventive Medicine
Monash University
Level 3, 89 Commercial Road
Melbourne, Victoria 3004
Australia
----- Original Message -----
From: Ed Levitas <[email protected]>
Date: Saturday, November 3, 2007 2:06 am
Subject: st: QIC Program question to assess fit in xtgee
To: [email protected]
> Statalisters,
>
> I am attempting to use the QIC program (Stata journal v 7 #2) to
> assessthe 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
>
> *
> * For searches and help try:
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> * http://www.ats.ucla.edu/stat/stata/
>
>
>
*
* For searches and help try:
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