No html posting, right?
Anyway, both Stata 10 and 11 perform this perfectly:
*******
webuse fullauto, clear
oprobit rep77 weight length mpg if foreign
estimates store a
oprobit rep77 weight length mpg if !foreign
estimates store b
suest a b
test [a_rep77]weight=[b_rep77]weight
*******
Make sure you get the names for -test- right.
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