Re: st: Bug in margins

[Sue Kay <professors@gmail.com>]

Thanks both of you,

I must have missed that one when I checked the statalist. I still cannot 
see it in the help file though, or maybe I am misinterpreting some of 
the description.

Sometimes I just wish the help files are a little more clear for a 
layman like me.

On 9/1/13 7:10 PM, Ariel Linden, DrPH wrote:
> See the response that was given to me when I posted the same question last
> month
>
> http://www.stata.com/statalist/archive/2013-08/msg00451.html
>
>
>  From 	  William Buchanan <william@williambuchanan.net>
> To 	  "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
> Subject 	  Re: st: Bug in margins
> Date 	  Sun, 1 Sep 2013 19:46:00 -0500
>
> Check the help file again, in particular the -fixedonly- option.  This was
> also recently discussed on the Statalist.  The problem is due to the random
> effects.
>
> Sent from my iPhone
>
> On Sep 1, 2013, at 19:37, Sue Kay <professors@gmail.com> wrote:
>
> > Hi,
> >
> > I don't know whether it is due to a bug, or I am missing something, but I
> have some problems with margins command after I run my model with meqrlogit
> (with two random slopes).
> > Even I add the prefix i. to the factor variables in my model, I still got
> the dreaded "default prediction is a function of possibly stochastic
> quantities other than e(b)" message (which I get only if I don't use i.
> prefix with the variable I try to calculate my margins after xtlogit)
> > Here is a sample of what I do:
> > meqrlogit y i.x1 i.x2 i.x3 x4 x5 x6 x7 || cluster: x1 x2
> >
> > And when I try to do this:
> > margins x1
> >
> > I receive:
> > default prediction is a function of possibly stochastic quantities other
> than e(b)
> > I tried running my model using xtlogit (just with random intercept of
> course), and the margins command works without a problem.
> > Am I missing something?
>
>
>
> *
> *   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/