Not sure what you are aiming at: -help heckman- shows that -robust- is
already possible for the vce in for the heckman ML variant...
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Sami Haile
Sent: Wednesday, October 29, 2008 3:56 AM
To: statalist
Subject: st: quasi maximum liklihood in heckman selection model
Dear Statalist
Can someone tell me how to eastimate heckman selection model with quasi
maximul likelihood, so as to use the huber- white robust eastimator of
variance. Thanks in advance.
regards,
sami
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