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SV: SV: st: Problems with calculating marginal effects for categorical variables in ologit models


From   "Lina Jonsson" <lina.jonsson@vti.se>
To   <statalist@hsphsun2.harvard.edu>
Subject   SV: SV: st: Problems with calculating marginal effects for categorical variables in ologit models
Date   Wed, 23 Apr 2008 14:18:18 +0200

Thank you.

Then I will use the findit command next time.

Best Regards.

Lina Jonsson 

> -----Ursprungligt meddelande-----
> Från: owner-statalist@hsphsun2.harvard.edu 
> [mailto:owner-statalist@hsphsun2.harvard.edu] För Maarten buis
> Skickat: den 23 april 2008 14:15
> Till: statalist@hsphsun2.harvard.edu
> Ämne: Re: SV: st: Problems with calculating marginal effects 
> for categorical variables in ologit models
> 
> -margeff-, and quite a number of other packages, have 
> appeared in the Stata Journal and also on SSC. Usually, but 
> not always, the stuff present of SSC is more recent than the 
> stuff that appears in the Stata Journal. You can find both by 
> typing -findit margeff-.
> 
> Hope this helps,
> Maarten
> 
> --- Lina Jonsson <lina.jonsson@vti.se> wrote:
> 
> > Eva,
> > 
> > When I updated margeff it works! But I downloaded the 
> margeff package 
> > just a few hours ago after searching for margeff using the search 
> > command in Stata. Next time I want to download a package, should I 
> > download it from someplace else to get the latest version?
> > 
> > Thank you!
> > 
> > And also thanks to Richard Williams that also suggested to update 
> > which I then didn´t try since I just had downloaded the package
> > 
> > /Lina
> >  
> > 
> > > -----Ursprungligt meddelande-----
> > > Från: owner-statalist@hsphsun2.harvard.edu
> > > [mailto:owner-statalist@hsphsun2.harvard.edu] För Eva Poen
> > > Skickat: den 23 april 2008 11:23
> > > Till: statalist@hsphsun2.harvard.edu
> > > Ämne: Re: st: Problems with calculating marginal effects for 
> > > categorical variables in ologit models
> > > 
> > > 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 It might be out of date.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/
> > > 
> > 
> > *
> > *   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/
> > 
> 
> 
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology Vrije Universiteit 
> Amsterdam Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
> 
> visiting address:
> Buitenveldertselaan 3 (Metropolitan), room Z434
> 
> +31 20 5986715
> 
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
> 
> 
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> 

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