st: heckman predict mills ratio

["Peter Haan" <phaan@diw.de>]

Hi,

I have a question concerning predicition after performing a heckman 
estimation :

Do I have to calculate and add the mills ratio after having predicted 
(after using "heckman" or does the stata command "predict, xb" (after 
"heckman") automatically adjust for that, so that my results are unbiased?

thank you for your advise

cheers,

peter


Peter Haan
Wissenschaftlicher Mitarbeiter
Deutsches Institut f�r Wirtschaftsforschung (DIW Berlin)
German Institute for Economic Research
Abt. Staat / Dept. Public Economics
K�nigin-Luise-Stra�e 5, 14195 Berlin
Tel. +49/30/89789-165, Fax. +49/30/89789-114 

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