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Re: st: Wald test limit?


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Wald test limit?
Date   Tue, 5 Feb 2008 23:22:57 +0000 (GMT)

--- Keith Dear <keith.dear@anu.edu.au> wrote:
> But I still don't know why nbreg is fitting 262 parameters (including
> _cons) but then apparently testing only 256 of them. 

There have been a number of occations that I was absolutely convinced
that Stata got the df-s wrong, and I have always been proven wrong. In
most cases my error was that some of the variables were droped by Stata
due to multicolinearity. Are any of your standard errors missing (.) or
does Stata say that it has dropped variables or did you impose
constraints? 

-- 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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