heckman¶ Fit a sample-selection model with an outcome equation and a selection equation. When to use How do I correct for non-random selection into the observed sample? Syntax¶ heckman y x1 x2, selectdep(z) select(z1 z2) [options] Examples¶ heckman wage educ exper, selectdep(work) select(age kids) See also¶ Command Reference Index User Guide In-App Help System