st: Treatreg with two regression equations?

[Jennifer Alix <alix@are.berkeley.edu>]

Hello,

Does anyone know if there is a way to specify two different regression 
equations for the treatreg command?  That is to say, I have a problem where 
regime choice is known, but once the selection is made, the two different 
groups have entirely different behaviors.  Treatreg (and heckman) seem only 
to offer the option of one second-stage regression equation.

Thanks,
Jennifer


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