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From |
"Eva Poen" <eva.poen@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 12:23:23 +0100 |

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/

**Follow-Ups**:**Re: st: Problems with calculating marginal effects for categorical variables in ologit models***From:*"Joao Ricardo F. Lima" <jricardofl@gmail.com>

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

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