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Re: st: GEE objects


From   prathouz@uchicago.edu
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: GEE objects
Date   Sat, 9 Feb 2008 11:06:49 -0600 (CST)

Hi Maarten --

Thanks for the response. I did do that. It just gives the scores for each individual observation, not at the cluster level. To construct what I need below, it is possible to use these scores and to cycle through all clusters, for each cluster building the required variance-covariance matrix with the outputted wcorr matrix from xtgee postestimation. This is the work I was trying to avoid!

-- pr

On Sat, 9 Feb 2008, Maarten buis wrote:


--- prathouz@uchicago.edu wrote:
Hi All -- I would like to obtain the following objects, perhaps
posted to another data set, after running a GEE model with xtgee.
The two things I need are:  The subject level "score" and
"information" given by

 	Di'Vi^{-1}Si     and     Di'Vi^{-1}Di

These things are computed and summed up during gee computations.
Does anyone know of an easy way to dump them out to a data set at the
last iteration?  Thanks! -- pr
Have a look at -help xtgee postestimation- in particular the section on
-predict-.

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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==========================================================================
Paul Rathouz, Assoc. Professor of Biostatistics           ph 773-834-1970
Dept. of Health Studies, Rm. W-264                       fax 773-702-1979
University of Chicago                               prathouz@uchicago.edu
5841 S. Maryland Ave. MC 2007
Chicago, IL 60637
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