use "C:\Users\nojko\Dropbox\My PC (DESKTOP-35V8EGV)\Documents\EMUPP_2021\Mikroekonometrija_2021\pension.dta" 
*** OPROBIT model
oprobit pctstck choice age educ female black married finc25 finc50 finc75 finc100 finc101 wealth89 prftshr
***Marginalni efekti za vrednosti aritmetickih sredina
margins, dydx(*)
***Marginalni efekti preracunati za razlicite ishode
margins, dydx(*) predict(outcome(0))
margins, dydx(*) predict(outcome(50))
margins, dydx(*) predict(outcome(100))
***Vrenosti indeksne funkcije
predict pscore, xb