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

[Richard Williams <Richard.A.Williams.5@nd.edu>]

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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