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From | Christopher Baum <kit.baum@bc.edu> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: Error w/ "inteff" command |
Date | Sat, 29 Dec 2012 15:51:46 +0000 |
<> Could anyone help me understand what I might be doing wrong? I am running the following example using stata 9, 10 or 12: webuse lbw2 gen agerace=age*race probit low age race agerace inteff low age race agerace What you are doing wrong is treating race, which is categorical with values 1,2,3, as if it was a dummy. -inteff- from SJ will handle a c-c interaction, and a c-i interaction, but not a set of interactions, which is what you need here. As you have Stata 12, you should have no problem doing it all with built-in commands: webuse lbw2, clear probit low c.age##i.race margins, dydx(_all) margins, dydx(age) over(race) Kit 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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/