st: regression when endogenous regressor continuous?

["Nirina F" <fstata@gmail.com>]

Hello all ,

If my endogenous variable was a binary (1,0) then I would have
estimated the following equation with stata
                       biprobit ($endogvar= $exogvar) (depvar =
$endogvar $exogvar)

where depvar is my dependent variable which 0 or 1 but
Now since the endogvar is years each individuals smoke (0 or 1 or 2
until 18), how would I run
($endogvar= $exogvar) (depvar = $endogvar $exogvar) with STATA.

Many thanks

Nirina
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