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st: Re: sample selection bias

From   "Scott Merryman" <>
To   <>
Subject   st: Re: sample selection bias
Date   Sun, 22 Jun 2003 11:30:20 -0500

----- Original Message ----- 
From: "Kenya Valeria Micaela de Souza Noronha" <>
To: <>
Sent: Saturday, June 21, 2003 2:01 PM
Subject: st: sample selection bias

> Dear all
> I need to estimate a model based on heckman method, but the selectivity is
> modelled as a multinomial logit. Is there any command in Stata for this
> model? How can i estimate it?
> thanks
> Kenya

If you go from the Stata homepage -> Links -> Stata Resources  -> Programs,
you will find a program and paper to estimate linear regression models on a
selected subset of observations, where selectivity is modeled as a
multinomial logit (based on a two-step method).

Or you can install the file by typing within Stata
net from

Hope this helps,

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