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Re: st: Double selectivity model


From   Justin Falk <justfalk@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Double selectivity model
Date   Fri, 6 Mar 2009 12:19:29 -0800 (PST)

If you have sequential binary outcomes you can use heckprob. If you have an outcome that is only observed if two other sequential binary conditions are met (so you have three equations in all, like a "double heckit") you can write a two step program pretty easily. I had to do that recently, and I'm willing to share the do-file.

Justin

--- On Fri, 3/6/09, nigussie Tefera <nitefera@yahoo.com> wrote:

> From: nigussie Tefera <nitefera@yahoo.com>
> Subject: st: Double selectivity model
> To: statalist@hsphsun2.harvard.edu
> Date: Friday, March 6, 2009, 9:20 AM
> Dear statalist members
> 
> Is there a program for estimating Double selectivity model
> for STATA? I appericiate any help
> 
> Cheers
> 
> Nigussie
> 
> 
>       
> 
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