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st: suest and test


From   anju parthan <aparthan@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: suest and test
Date   Sat, 12 Feb 2005 11:53:30 -0800 (PST)

Dear Stata Users

I am trying to run poisson, nbreg, zip, and zinb on a
survey data. Since there is no svy comand for zip and
zinb, I am using suest.,svy command with zip and zinb
using iweights. 

For example I am estimating the zip as follows-

zip absdays age00  gender2 ethrace2 ethrace3 ethrace4
educ1 educ3 educ4 educ5 marry2 occup2 occup3 occup4
hlthins2  [iweight=perwt00f ] if  refper>0,
inflate(age00 gender2 ethrace2 ethrace3 ethrace4 educ1
educ3 educ4 educ5 marry2 occup2 occup3 occup4
hlthins2)   exposure(refper) score(P1 P2) 

suest., svy

This gives me beta coefficients taking into the survey
options. 

I am having problem comparing the models. I am using
test command (wald test)to compare svypoisson and
svynbreg. But how do I compare the zip and poisson or
zinb and nbreg? I know we can compare zip and poisson
using voung test. But how do I use the voung test when
I am using iweights and suest commands.

Any thoughts ?

Regards
Anju



=====
____________________________________________________________
 
Anju Parthan, 
Doctoral Candidate, 
The University of Texas at Austin, PHAR-PHARMACY ADMIN 
1 UNIVERSITY STATION A 1930, AUSTIN, TX-78712 
Tel: (512) 459-4942; Fax: (512) 471-8762




		
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