Date: Tue, 22 Jan 2008 19:41:12 -0800
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
Subject: need help with Heckman model
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I was trying to address the self-selection or reverse causality
problem using the Heckman (1979) two step treatment effects model. I
ran the test by immitating the following sas codes. However, I can not
figure out how to get the coefficent & esitimate of the inlf in the
second model (see below) and the HeckmanĘs Ž.
proc qlim data=mroz;
model inlf = nwifeinc educ exper expersq age kidslt6
model lwage = educ exper expersq / select(inlf=1);
Could anyone help? Thanks a lot.