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Re: st: estimate of rho in tobit


From   smerryman@kc.rr.com
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: estimate of rho in tobit
Date   Tue, 25 Jul 2006 15:30:54 -0500

Selection model?  Perhap you looking for -heckman-?

Both -search- and -findit- are very helpful tools to locate 
information.

For example:

. search selection model

Keyword search

        Keywords:  selection model
          Search:  (1) Official help files, FAQs, Examples, SJs, and 
STBs

Search of official help files, FAQs, Examples, SJs, and STBs


[R]     biprobit  . . . . . . . . . . . . . . . .  Bivariate probit 
regression
        (help biprobit)

[R]     heckman . . . . . . . . . . . . . . . . . . .  Heckman 
selection model
        (help heckman)

[R]     heckprob  . . . . . . . . . . . . . . . .  Probit model with 
selection
        (help heckprob)

<snip>


Scott

----- Original Message -----
From: Lijiang Shen <lshen@uga.edu>
Date: Tuesday, July 25, 2006 3:15 pm
Subject: st: estimate of rho in tobit
To: statalist@hsphsun2.harvard.edu

> Dear All,
> 
> I am new to Stata and I have a question about tobit analysis in 
> Stata. The 
> tobit procedure yields estimates of sigma and coefficients for 
> each 
> predictors, among others. My question is, how do I get the 
> estimate of rho 
> (the correlation between the error terms in the outcome model and 
> the 
> selection model)?
> 
> thanks!
> 
> Lijiang 
> 

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