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From |
"Joao Ricardo F. Lima" <jricardofl@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Problems with calculating marginal effects for categorical variables in ologit models |

Date |
Tue, 22 Apr 2008 08:31:05 -0300 |

Eva, or then margeff, dummies(d*) because he said "D are all dummies for which you want to calculate the marginal > effects" not B. Best, Joao Lima 2008/4/22, Eva Poen <eva.poen@gmail.com>: > I cannot reproduce your problem using the auto data (see example > below). Btw, it's unlikely that you have literally typed -Margeff, > dummies (B *)-. Instead, you probably wrote > -margeff, dummies(B*)-. > > Also, you said "D are all dummies for which you want to calculate the marginal > effects". The option -dummies- does not mean that marginal effects > will be calculated only for these variables. The option ensures that, > for the process of calculating marginal effects, only one of the > dummies will be set equal to 1, while all others are set to 0. > > If you send the exact code of your ologit model and the margeff > command to the list, people will be more likely to help. > > Eva > > ** example > sysuse auto, clear > tab headroom, gen(hr) /* create dummies */ > ologit rep78 foreign hr1 hr2 hr3 hr4 hr5 hr6 hr7 > margeff, dummies(hr*) > ** end of example > > > > > 2008/4/22, MANUELFERN.FLORES@rai.usc.es <MANUELFERN.FLORES@rai.usc.es>: > > Dear users, > > > > My question is following one: I do not know how to calculate average > > marginal effects (AME) for categorical variables with more than two > > categories? > > In my ordered logit model, I have a dependent variable with 4 categories > > and 5 categorical explanatory variables, 3 of them with more than two > > categories. I tried to implement the method of Tamás Bartus which is > > decribed in his article "Estimation of marginal effects using margeff" > > (2005). His suggestion is to use the following command: > > Margeff, dummies (B *) > > where D are all dummies for which you want to calculate the marginal > > effects. > > The problem is that by trying to do this I got the following error: > > "[_cut1] not found" r(111) > > > > I would appreciate very much any suggestions. > > > > * > > * For searches and help try: > > * http://www.stata.com/support/faqs/res/findit.html > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > * > * For searches and help try: > * http://www.stata.com/support/faqs/res/findit.html > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > -- ------------------------------- Joao Ricardo Lima Professor UFPB-CCA-DCFS +553138923914 ------------------------------- * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**SV: st: Problems with calculating marginal effects for categorical variables in ologit models***From:*"Lina Jonsson" <lina.jonsson@vti.se>

**References**:**st: Problems with calculating marginal effects for categoricalvariables in ologit models***From:*MANUELFERN.FLORES@rai.usc.es

**Re: st: Problems with calculating marginal effects for categorical variables in ologit models***From:*"Eva Poen" <eva.poen@gmail.com>

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