st: selmlog command output

["Jean Dupont" <jeandupont20@hotmail.com>]

Dear all,

I' actually using the selmlog command in order to model selectivity into 
wage work with different possible occupation.
However, I found something that I don't understand : using the Lee option, 
the output gives me both a positive rho and a positive coefficient for _m1 
while I had understood that those signs should be opposite, due to the fact 
that Lee's model estimates
y=xB-s*rho*IMR+e

Also, when I use the Dubin and Mac Fadden approach, I'm not really sure of 
the interpretation I should give of the coefficients on the _mi and on the 
values of rho.


Thank you very much for your time and help.

Jean.

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