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Re: st: RE: model fit comparison for xtgee


From   Terry Lum <[email protected]>
To   [email protected]
Subject   Re: st: RE: model fit comparison for xtgee
Date   Thu, 24 Jun 2010 13:04:33 -0500

Thanks a lot.


Terry

Nick Cox wrote:
This is an FAQ: How can I get an R-squared value when a Stata command does not supply one?
http://www.stata.com/support/faqs/stat/rsquared.html

Nick [email protected]
[email protected]

I am comparing two xtgee models to see how much explanatory power has increased by adding a block of variables. I did a hausman test and the null hypothesis was rejected. I do want to know how much more variance was explained by the new variables. Can the xtgee generate something like r-square type model fit index. Or is there anyway I can come up with some formal indicators for improvement in model fit under the new model.


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--
Terry Lum, Ph.D.
Associate Professor
School of Social Work
University of Minnesota
Phone: 612.624.4722
Fax: 621.624.3744

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