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Re: st: -by varname- and -est store-

From   Maarten buis <>
Subject   Re: st: -by varname- and -est store-
Date   Wed, 16 Aug 2006 17:10:45 +0100 (BST)

This seems to be a case for -statsby-, see: -help statsby-

--- Bernhard Ganglmair <> wrote:
> 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.

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

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