1. So you're telling me that using **xi:** probit y x1 x2 x3 x4 x5 x6 x7 x8 i.x9 i.x10 is useless. So, how can I produce all the dummy variables for the last two? Through "tabulate"? Since I have a dataset LONG, I thought xi could be more simple.

2. You have underlined the problem with margins. But there is also another one: if I use the normal probit regression (without xi), I put the i.x for the dummy variables. In this case Stata gives me an error about the first two, continuous, telling me that are not included (if I remember correctly the are not included in b(e) ).

I tried to use mfx compute, dxdy at(mean), but I don't know how much I am right about it, I have never used it before.