What you appear to want is to compare estimates from the same model
for different datasets (D==1 and D==0). This is not a matter of
having a model with different equations. One thing you could do is
create an interactionterm between x and D (call this x_d), and test
whether x_d is zero using -test-.
> I need to test the equality of parameters of the two
> tobit equations.
> tobit y x if D==1,ll(0)
> tobit y x if D==0,ll(0)
> Although I read help file of "test" and "testnl", I
> did not find out how to set equation name in this
> model and to conduct wald test.
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