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| From | "m. kh" <mkhkheder@yahoo.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: mfp and factor variable |
| Date | Thu, 4 Aug 2011 13:08:40 -0700 (PDT) |
adding xi worked beautifully, thank you all for your help ----- Original Message ---- From: Richard Williams <richardwilliams.ndu@gmail.com> To: statalist@hsphsun2.harvard.edu; statalist@hsphsun2.harvard.edu Sent: Thu, August 4, 2011 7:52:49 PM Subject: Re: st: mfp and factor variable At 10:36 AM 8/4/2011, m. kh wrote: >Hi all > >I am trying to run > >. mfp: logit comp i.bmicat age apacheii sex dm admityear > >and I got the following message > >factor variables and time-series operators not allowed > >if I include my categorical variable without i before the variable, >it would be >considered as continuous. Any idea how to overcome this problem. Can you create the dummy variables yourself? Or maybe use xi, e.g. sysuse auto xi: mfp: regress mpg weight displacement i.foreign Having said that, whenever Stata won't do something that I would expect it to allow, I wonder (1) is there a good statistical reason for not allowing me to do it, or (2) have they just not gotten around to programming it yet? ------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * 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/