Binary outcome equation with a categorical selection equation

[Tim Zhang]

Hello all:
I have a two stage model. The first stage is a selection equation with a categorical variable (druginsr):1. no insurance, 2. government sponsored insurance 3. private insurance. A set of social economic status and chronic conditions are included as explanatory variables.
And the second stage outcome is a binary variable (avoid_care) =1, if patient avoiding care because of cost, =0 otherwise. The insurance status (druginsr), a subset of social characteristics and all the chronic conditions are included as explanatory variables.

cmp (avoid_care = age sex post_educ....... druginsr) (druginsr = age sex post_educ immigrant oth_language......... ), ind(druginsr*$cmp_probit $cmp_mprobit) qui

I tried "cmp" like above and cannot get any estimates? If someone knows a different way of doing this or how to improve please please let me know.
Thank you!

[Roman Mostazir]

What do you mean by 'cannot get any estimates'? You are expected to show us the exact command you have used and exact output Stata produced for you which is written in FAQ section. However, what is that 'qui' at the end of your commands? Is that a variable? What happens if you remove it?