Hello everyone,
Regarding the Heckman two-step selection model for sample selection problem, Wooldridge (2010) says that the two step procedure (1st step:probit, 2nd step: OLS) for Heckman sample selection model is sometimes called Heckit. The heckman command in Stata allows for different options such as twostep, mle. If I use the heckman, can I say that I am using Heckit? If not, what is the options with heckman command for Heckit?
Thank you!
A,
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