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From |
"Supnithadnaporn, Anupit" <gtg065t@mail.gatech.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Marginal effect after -clogit- and -xtlogit- |

Date |
Sat, 7 Feb 2009 12:00:24 -0500 (EST) |

Yes, this helps! Thanks Maarten and Steven. Anupit ----- "Steven Samuels" <sjhsamuels@earthlink.net> wrote: > Maarten is correct: -predict(pu0)- gives the predicted probability > when the intercept is zero. However, zero may not be a plausible > value. For example: consider an unconditional model Y= logit(P) = a > > + ln(2)X, corresponding to OR = 2.0, for a one-unit increase in X. > If the likely range of probabilities is 0.01 to 0.30, the > corresponding range of Y is about -4.60 to -0.85. If X > -1, then a > > = 0 is not possible. > > -Steve > On Feb 6, 2009, at 3:01 PM, Maarten buis wrote: > > > > > --- On Fri, 6/2/09, Supnithadnaporn, Anupit wrote: > >> I analyze the data using both -clogit- and -xtlogit fe- > >> commands. I would like to get the marginal effect of each > >> independent variables in the model. However, -mfx- command > >> does not work after both -clogit- and -xtlogit fe-, giving > >> the error > >> > >> predict() expression unsuitable for marginal effect > >> calculation > >> r(119); > >> > >> Would anyone please suggest me how to get the marginal > >> effect after running -clogit- and -xtlogit fe-? > > > > -mfx, predict(pu0)- > > > >> > * > * 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/

**References**:**Re: st: Marginal effect after -clogit- and -xtlogit-***From:*Steven Samuels <sjhsamuels@earthlink.net>

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