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st: RE: Fwd: zip zinb : testparm or loglikelihood ?


From   "Maarten Buis" <[email protected]>
To   <[email protected]>
Subject   st: RE: Fwd: zip zinb : testparm or loglikelihood ?
Date   Mon, 18 Jun 2007 11:48:52 +0200

--- Johanna LEPEULE wrote:
 >I use zero-inflated (Poisson and negative-binomial) models.
>Y=nbaoaj, is a number of lesions.
>X=mother_age, is a qualitative variable with 3 classes
>Can I use xi: testparm i.mother_age, equation(nbaoaj) to test the global
>effect of the variable mother_age ?
>Or must I use the Loglikelihood ratio test ?

Why do you doubt that you can use -testparm-?

-----------------------------------------
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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