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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