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| From | "Bontempo, Daniel E" <deb193@ku.edu> |
| To | <statalist@hsphsun2.harvard.edu> |
| Subject | st: RE: Using # sign with factor variables to create interactions |
| Date | Fri, 6 Aug 2010 12:23:34 -0500 |
Does "margins smoker#agegrp" give you what you want? -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Weichle, Thomas Sent: Friday, August 06, 2010 11:12 AM To: statalist@hsphsun2.harvard.edu Subject: st: Using # sign with factor variables to create interactions Hi Statalisters, I'm using the new # sign notation with factor variables to create interactions. I would like to do post model linear combinations with the lincom command. Since the level indicator variables are not created in the dataset (or memory I believe), how do I do linear combinations after running a model that incorporated an interaction using the # sign notation (ex. smoker#agegrp)? I've discovered that I could just change the base level in order to see different linear combinations but this requires running new models for each combination I want. Is this the best way to do it with the new notation? Tom Weichle Math Statistician Center for Management of Complex Chronic Care (CMC3) Hines VA Hospital, Bldg 1, C202 708-202-8387 ext. 24261 Thomas.Weichle@va.gov * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/