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From |
"Bartus Tamás" <tamas.bartus@uni-corvinus.hu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: AW: st: margeff after mlogit |

Date |
Fri, 13 Dec 2013 06:09:16 +0100 |

Dear Lena, Just use factor variables and margins will now which dummies belong to the same variable. When I wrote margeff , there were no factor variables around. This is the reason behind the dummies option in margeff. Tamas On 13/12/12, LIECHTI Lena <lena.liechti@unifr.ch> wrote: > margins helps, thanks! > > Do you know, if there is a possibility to estimate AMEs properly with the margins command if more than one dummy belong to the same variable (e.g. three levels of education)? > With the margeff command this would be the option "dummies()" > > > ________________________________________ > Von: owner-statalist@hsphsun2.harvard.edu <owner-statalist@hsphsun2.harvard.edu> im Auftrag von Richard Williams <richardwilliams.ndu@gmail.com> > Gesendet: Donnerstag, 12. Dezember 2013 18:44 > An: statalist@hsphsun2.harvard.edu; statalist@hsphsun2.harvard.edu > Betreff: Re: st: margeff after mlogit > > A few other thoughts: > > I am surprised it won't run with only a 1000 > cases and one variable. That makes me wonder if > there is something weird about the data or the > model, e.g. does one category only have 3 cases? > But, if it is a problem with margeff, maybe switching to margins will fix it. > > Consider (at least for exploratory purposes) > estimating the marginal effects at the means > (MEMs) rather than the AMEs. This should be far > less computationally intensive. If problems > persist, that again makes me wonder about the data or model. > > One of the nice things about margeff is that a > single command will generate all the marginal > effects. With margins, you have to have a > separate command for each outcome, e.g. if y has > 4 categories you need to do something like > > mlogit y i.x1 i.x2 > margins, dydx(*) predict(outcome(#1)) > margins, dydx(*) predict(outcome(#2)) > margins, dydx(*) predict(outcome(#3)) > margins, dydx(*) predict(outcome(#4)) > > Having margins do all the outcomes at once after > things like mlogit and ologit is on my ongoing > wish list for each new version of stata. > > > At 09:54 AM 12/12/2013, Maarten Buis wrote: > >With Stata 12 you can use the official -margins- command instead of > >the user-written -margeff- command to get the average marginal > >effects. You would have to use factor variables instead of manually > >creating the indicator variables; see -help fvvarlist-. > > > >Hope this helps, > >Maarten > > > > > >On Thu, Dec 12, 2013 at 3:11 PM, LIECHTI Lena <lena.liechti@unifr.ch> wrote: > > > Dear STATA-List ;I am trying to compute > > average marginal effects via margeff command > > (example: margeff, dummies(educ_* child* age* > > zivl* lang* pop*) replace) after a multinomial > > logistic regression. Stata (SE 12.1) seems to > > compute something but even after several days, > > the process is still going on.;I have a huge > > data set (around 700´000 observations). The > > dependent variable has three possible outcomes > > and I include 18 independent variables. But a > > trial with a much smaller data set (1´000 > > observations) and only one independent variable > > also takes ages without providing any > > results.;Does anybody know, why this happens > > and how to overcome this problem?;Thanks and best regards;Lena > > > > > > > > > > > > * > > > * For searches and help try: > > > * http://www.stata.com/help.cgi?search > > > * http://www.stata.com/support/faqs/resources/statalist-faq/ > > > * http://www.ats.ucla.edu/stat/stata/ > > > > > > > >-- > >--------------------------------- > >Maarten L. Buis > >WZB > >Reichpietschufer 50 > >10785 Berlin > >Germany > > > >http://www.maartenbuis.nl > >--------------------------------- > > > >* > >* For searches and help try: > >* http://www.stata.com/help.cgi?search > >* http://www.stata.com/support/faqs/resources/statalist-faq/ > >* http://www.ats.ucla.edu/stat/stata/ > > ------------------------------------------- > Richard Williams, Notre Dame Dept of Sociology > OFFICE: (574)631-6668, (574)631-6463 > HOME: (574)289-5227 > EMAIL: Richard.A.Williams.5@ND.Edu > WWW: http://www.nd.edu/~rwilliam > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ > > -- Tamás Bartus, PhD Associate Professor, Deputy Director Institute of Sociology and Social Policy Program Director, Doctoral School of Sociology Corvinus University, Budapest 1093 Budapest, Közraktár utca 4-6. Room 424. Phone: +36-1-482-7301 Fax: +36-1-482-7348 Homepage: http://web.uni-corvinus.hu/bartus * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**AW: AW: st: margeff after mlogit***From:*LIECHTI Lena <lena.liechti@unifr.ch>

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