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st: Poisson Model with endogenous dummy variable

Subject   st: Poisson Model with endogenous dummy variable
Date   Wed, 20 Feb 2008 17:21:04 +0100

dear all,
I would like to estimate a poisson model which includes an endogenous dummy variable. To be more precise, this dummy captures a "treatment effect", hence I would like to model the selection process that underlies it by a probit model, and use the fitted probabilities as instruments for the dummy.
Does anyone of you know a Stata command (either built in or not) that allows to estimate such a model?
thank you very much for any help

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