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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 |
Wed, 23 Apr 2008 10:23:23 +0100 |

Lina, I cannot reproduce this error. The following example works fine for me in Stata 9 and 10. -which margeff- returns *! Version 2.1.7 (10 March 2008) on my machine. *** example sysuse auto, clear xi: ologit rep78 foreign i.headroom [pweight=price] margeff margeff, dummies(_I*) *** end If this example doesn't work for you, try updating -margeff-. It might be out of date. Also, tell us which version of Stata you are using. Eva 2008/4/23 Lina Jonsson <lina.jonsson@vti.se>: > Hello. > > I recieve the same error message when I'm using margeff after ologit. > > When entering: > > xi: ologit F24 i.SDO i.F17_A [pweight=VIKT] if F24!=6 > margeff, dummies(_I*) > > > I recieve: > > [_cut1] not found > r(111); > > But I don't think the problem lies within the dummies option because I recieve the same error message when I'm using the margeff command without specifying , dummies(_I*) > > Any ideas what could be the problem? > > Best regards > > /Lina Jonsson > > > > > -----Ursprungligt meddelande----- > > Från: owner-statalist@hsphsun2.harvard.edu > > [mailto:owner-statalist@hsphsun2.harvard.edu] För Joao Ricardo F. Lima > > Skickat: den 22 april 2008 13:31 > > Till: statalist@hsphsun2.harvard.edu > > Ämne: Re: st: Problems with calculating marginal effects for > > categorical variables in ologit models > > > > 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/ > > > > * > * 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**:**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>

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

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

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