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Re: st: Why t- rather than z-statistics in svylogit?


From   Richard Williams <Richard.A.Williams.5@nd.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Why t- rather than z-statistics in svylogit?
Date   Mon, 24 Nov 2003 09:25:09 -0500

At 01:37 PM 11/24/2003 +0000, Neumayer,E wrote:
Hi,

I was surprised to find that svylogit produces t-statistics rather than z-statistics. Logit produces t-statistics as one would expect. Anybody knows the answer?
This is discussed on p. 357 of the Stata 8 Users guide (see point #2). I can't say that I fully understand the explanation, but the key phrase seems to be "Using z rather than t statistics only yields a nontrivial difference when there is a small number of clusters (<50)."

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