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st: ordered heckman help


From   Sami Haile <samex_zegr8@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: ordered heckman help
Date   Mon, 14 Jul 2008 13:31:54 -0700 (PDT)

Dear Statalist
I tried to run ordered probit with selection using oheckman command with maximum liklihood....
I got a Warning: Two-step initial estimate of rho0 = 1.1182849 truncated to +/-.85.
Warning: Two-step initial estimate of rho1 = . truncated to +/-.85..
 Any help is appriciated.
Regards,
Sami


      


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