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st: -by varname- and -est store-
Hi,
I am struggling with -by- and the -estimates- command. Hopefully
somebody can give me a hint.
I estimate a bivariate probit model for each value of the variable
varname using clustered data, i.e. for various sub-populations defined
by varname. The first approach that came into my mind was just running
the biprobit with if varname==some value. The Stata manual on survey,
however, tells me that I would incorrect variance estimates if I used
-if-. It is suggested to use the by() or subpop() option. Since
byprobit doesn't allow for by() or subpop() [version 8; no
svybiprobit], I am running the following:
by varname, sort: biprobit y1 y2 varlist, cluster(ea)
For each value of varname I'd like to store the estimation results,
-est store- however gives me only the results of the last value in
varname.
How do I address results generated using -by-?
Best, Bernhard
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