[Limdep Nlogit List] Ordered probit with sample selection
v.tartari at imperial.ac.uk
Fri Mar 6 01:38:47 EST 2009
I am trying to estimate an ordered probit model with sample selection. The first step (probit) works fine, however when I try to run the second step I get this message: "Error 128: Models - Insufficient variation in dependent variable".
My dependent variable is coded 0,1,2,3 and if I run an ordered probit without the selection it works fine.
Any idea of what can be the problem?
Thank you a lot
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