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st: Heckman with double selection


From   Aurelie Martin <martiaa8@hei.unige.ch>
To   statalist@hsphsun2.harvard.edu
Subject   st: Heckman with double selection
Date   Fri, 05 May 2006 10:15:13 -0400

Hi,

I would like to estimate the amounts of rescheduled debt by debtors in three
stages
1)Get an IMF agreement (probit)
2)Conditional on 1), get the probability of getting a debt rescheduling
(probit/heckprob)
3)Conditional on 2), find how much debt is rescheduled. (OLS)

Now, how do I do that?
I know how to implement 2) conditional on 1). That's heckprob.
I know how to implement 3) conditional on 2). That's heckman.
But I don't know to deal with the three stages/double selection.

Thanks for your help.

Aurelie

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