Sorry -- I should have been more concise:
Is there a way to force mlogit to use the omitted category from
-char depvar[omit] #
as the base outcome (reference group)? Or must I repeat this with the
b(#) option in the mlogit command?
The repetition is not difficult ... but I have a lot of regressions to run and therefore a lot of opportunities to make an error in defining the reference group.
--- On Sat, 3/28/09, Joao Ricardo F. Lima <[email protected]> wrote:
> From: Joao Ricardo F. Lima <[email protected]>
> Subject: Re: st: defiing the reference category in multinominal logistic regression
> To: [email protected]
> Date: Saturday, March 28, 2009, 11:39 AM
> Dan,
>
> I don´t know if understood your question. However, from
> the -h mlogit-:
>
> baseoutcome(#) specifies the value of depvar to be treated
> as the
> base outcome. The default is to choose the most
> frequent outcome.
>
>
> HTH,
>
> Joao Lima
>
>
> 2009/3/28 Dan Waldo <[email protected]>:
> > Hello, all ...
> >
> > I am running Stata10/SE, and am doing a series of
> multinomial logistic regressions.
> >
> > It's clear that Stata uses information from the
> > char ageg[omit] 3
> > instruction (for example) when setting up the
> explanatory variables. But such is not the case for the
> dependent variable.
> >
> > Again for example, the variable flushot is dichotemous
> with values 1,2 referring to yes,no.
> >
> > -char flushot[omit] 2
> > -xi: svy: mlogit flushot i.adjsmoker i.ageg i.rostsex
> i.myrace i.my_income i.my_ed i.my_dwell i.placepar , rr
> >
> > produces a regression in which (flushot==Yes is the
> base outcome)
> >
> > -xi: svy: mlogit flushot i.adjsmoker i.ageg i.rostsex
> i.myrace i.my_income i.my_ed i.my_dwell i.placepar , rr
> b(2)
> >
> > produces a regression in which (flushot==No is the
> base outcome)
> >
> > Am I out of luck is hoping that Stata will use the
> default reference category when the variable is used as a
> dependent variable?
> >
> > Dan Waldo
> >
> >
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
>
>
>
> --
> ----------------------------------------
> Joao Ricardo Lima, D.Sc.
> Professor
> UFPB-CCA-DCFS
> Fone: +5538396022774
> Skype: joao_ricardo_lima
> ----------------------------------------
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/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/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
