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Erasmo said
Does - margins, dydx(_all) - also handle the interaction of two dummy variables?
Yes. ht (hypertension, yes/no) and smoke (yes/no) are such, and interacted in the model below. Notice that each has a positive main effect on low bw, but if they appear together the effect is, strangely enough, reduced (although the negative interaction coefficient is not distinguishable from zero).
probit low c.age##i.race i.ht##i.smoke
margins, dydx(_all)
Kit Baum | Boston College Economics & DIW Berlin | http://ideas.repec.org/e/pba1.html
An Introduction to Stata Programming | http://www.stata-press.com/books/isp.html
An Introduction to Modern Econometrics Using Stata | http://www.stata-press.com/books/imeus.html
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