From | Neil Shephard <nshephard@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Fwd: Interpreting dummy coded interactions with 3 levels |
Date | Wed, 18 Feb 2009 16:11:58 +0000 |
Can you not compare the reported R^2 or likelihoods (or even AIC or BIC) for the different models? Perhaps use -lrtest- to do this "automagically"? If you're asking how to actually write the commands to define the models with interaction then see -man xi- (or http://www.stata.com/help.cgi?xi ). The following may also be useful... http://www.ats.ucla.edu/stat/stata/Library/hetreg.htm http://www.ats.ucla.edu/stat/stata/Library/logit_wgould.htm Neil -- "The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data." ~ John Tukey Email - nshephard@gmail.com Website - http://slack.ser.man.ac.uk/ Photos - http://www.flickr.com/photos/slackline/ * * 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/
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