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st: Endegeneity in Heckman selection model?


From   Sami Haile <samex_zegr8@yahoo.com>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: Endegeneity in Heckman selection model?
Date   Mon, 3 Nov 2008 13:27:59 -0800 (PST)

Dear statalist,
How can endogeneity in Heckman selection model handled?
My dependent variable is sells value, and it is observed only if the household sold its product.
I want to include non farm income as explanatory variable in the sells equation.However, given that income is a function of sales proceeds, household income can be likely endogenous. So how can this be handeled or instrumented in STATA.
Thanks for your time and valuable comments.
Regards,
Sami




      

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