Average Partial Effects for a Non-Linear Regression

[jack black]

Hi,

I am running a Random Effect Ordered Probit Model with Self Rated Health as my dependent variable (5 Categories).
One independent variable is Lagged Health(1) so the regression is non-linear. (Other independent Variables are, Sleep, VegConsumption, FruitConsumption)
I have used the 'xtoprobit' command which has returned coefficients but I would like to calculate Average Partial Effects but cannot do so.
Any help or guidance would be apprectaited.
Thanks