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st: help: bootstrap with GEE in stata


From   citriaz@yahoo.com
To   statalist@hsphsun2.harvard.edu
Subject   st: help: bootstrap with GEE in stata
Date   Thu, 2 Jul 2009 05:01:18 -0700 (PDT)

Dear all,

I am running these two types of commands in stata:

bootstrap, reps(200): xtgee depvar indvar, fam(normal) link(id) i(case_no) t(week1_10) robust

xi: xtgee depvar i.indvar, fam(normal) link(id) i(case_no) t(week1_10) vce(bootstrap, reps(200))

The two commands give similar results for some of the variables, but for some of the variables I get very different results with respect to significance, for most of the variables I get significant results with the 1st command given above.

The dependent variables are of very complex nature and does not follow the assumption of normality, independent variable is a categorical(0,1) 

I will really appreciate if somebody could add comments/suggestions on this query.


Muhammad Riaz  


Muhammad Riaz   




      



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