st: Overid for ivtobit?

["feldman" <feldman@primal.ucdavis.edu>]

Do any of you know of any way to perform after ivtobit
something similar to what overid does after ivreg and
ivreg2?

I am using ivtobit with one endogenous variable and many
instruments. Using the first stage I have checked the
�relevance� of the instruments but I want to test their
statistical �validity�. 

Thanks, 
Alejandro


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