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re: st: Re: xtlogit and logistic-cluster (REVISED)


From   Ricardo Ovaldia <ovaldia@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   re: st: Re: xtlogit and logistic-cluster (REVISED)
Date   Fri, 6 Aug 2004 10:36:01 -0700 (PDT)

Thank you Joseph and David for the replies. I have a
couple of follow-up questions:

--- Joseph Coveney <jcoveney@bigplanet.com> wrote:

[snip]
> -xtlogit, re- would seem to be the remaining
> alternative available in Stata, 
> unless I'm overlooking something.  If there
> is a substantial correlation between the fixed
effects (physician covariates) and the random 
> effect, then the parameters are liable not to be
> consistently estimated.

How can I test this?


--- David Airey <david.airey@vanderbilt.edu> wrote:
 
> But when stuck with a small data set, why not run a
> model designed for 
> that data structure, as opposed to running a model
> not designed for the data structure?

This is an interesting point, because in my data I
have 50 clusters and 410 observations, so the number
of patients referred by a physician ranged from 1 to
43 with a median of 5 referrals.

I guess the question that remains is whether or not I
can justifiably use this approach?

Thank you again,
Ricardo. 


	
		
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