Dear Listers,

I am trying to estimate the marginal effects after running ivtobit. The following code is similar to the code I used in Stata 13.1.

Code:
ivtobit y1 x1 x2 (x3=z) [pweight = wgt1], ll vce(cluster vill1) first
mfx
The marginal effects that are presented are exactly the same as the normal coefficients and are much higher than expected.
I am not sure what I did wrong. Could someone help me out?

Kind regards,
Willemsen