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st: Heckman Sample Selection and Average treatment Effect


From   "Maoyong Fan" <[email protected]>
To   "statalist" <[email protected]>
Subject   st: Heckman Sample Selection and Average treatment Effect
Date   Wed, 16 Jun 2004 13:57:31 -0700

Dear Friends,

	I am doing a research on identifying the average treatment effect of a training program.  In order to get rid of the endogeneity problem of program participation, I want to try Heckman sample selection technique.  But I don't know how to get the average treatment effect by running Heckman in Stata.

For example,

t is dummy for training program (1: participate, 0: not participate)

I want to know how much the training program improve the performance.

The command
heckman dep_var var_1...var_n (t=var_1...var_m) twostep
can not give me the effect of t on dep_var.

How can I do that in Stata?	

Warm regards,

Maoyong Fan 				


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