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| Title | Stata 5: Obtaining Mills’ ratios for Heckman models | |
| Author | James Hardin, StataCorp |
The heckman command does not save the Mills’ ratios that it uses in the estimation of the Heckman selection model. However, it is straightforward to calculate them yourself:
. predict phat, xb
. gen mills = exp(-.5*phat2)/(sqrt(2*_pi)*normprob(phat))
Alternatively, you could specify the trace option to heckman.
