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st: chow test

From   "Chen, Naijun" <>
Subject   st: chow test
Date   Tue, 8 Nov 2005 15:36:23 -0600 (CST)

I am doing sample selection model analysis. In stata help, it says a chow
test can be used to test if the betas differs across by treatment(the
selection variable) and then decide which model(Endogeniety model or
sample selection model) is more efficient.

Is there anyone having experience about the chow test here?

Thanks a lot.

Naijun Chen

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