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From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Marginal Effects: CLogit |
Date | Sat, 6 Oct 2012 18:09:38 +0100 |
The help for -margins- starts off margins [marginlist] [if] [in] [weight] [, response_options options] where marginlist is a list of factor variables or interactions that appear in the current estimation results. That means what it says: so, you are asking something -margins- can't do it if you offer up continuous variables _as if_ they were factor variables. That just won't work. The real questions are thus exactly what you want out of -margins-; whether that makes sense, and how else to get it, on which others can advise better than I can. Nick On Sat, Oct 6, 2012 at 5:51 PM, Wameq Raza <wameq.r@gmail.com> wrote: > I was wondering if someone could kindly help me figure out how to get > the marginal effects of my conditional logit model. > The syntax I'm using: > > clogit hw cost_ time_ wait_,group(id) > margins cost_ time_ wait_, predict(xb) > > These are logged alt specific variables, but the error STATA keeps on > throwing back at me is: > "cost_: factor variables may not contain noninteger values" > > However, these are continuous variables and not factor vars. I'm not > sure how exactly to proceed. * * 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/