st: Re: does -margins- work after -menbreg- or -mepoisson- in Stata 13?

[Steve <drlead@prodigy.net.mx>]

Thanks for the feedbackAriel.  In your case you could go to -mixed- and get what you were looking for.

So, I'm guessing, with no response from anyone else, that there's no way to use -margins- with any of
the new-me- models.

If no one can come up with aworkaround, maybe  that should be on the wish list for Stata 14,
only 2+ years away.

Steve

__________________________________________________________________________
This won't make you feel any better, but I receive the same error when using
-meglm-

webuse pig
meglm weight i.week || id:
margins

default prediction is a function of possibly stochastic quantities other
than e(b)
r(498);


I spent an entire day trying to track down the post-estimation commands for
margins after meglm, to no avail.

Substituting -mixed- for -meglm- works fine

webuse pig
mixed weight i.week || id:
margins
 
Ariel



On 8/11/2013 7:28 PM, Steve wrote:
> I'm trying to use -margins- after -menbreg-.
>
> No matter how I set up the -margins- command, I receive the following 
> error message:
>
> default prediction is a function of possibly stochastic quantities 
> other than
> e(b)
> r(498);
>
> Here's just one example of the syntax I've used:
>      margins x1, at(x2=(-1(.1)3))
> where
>     x1 = dichotomous variable
> and
>     x2 =  continuous variable
>
> Both variables are in the -menbreg- model.
>
> I have the same problem after mepoisson.
>
> I know that -margins- works after -mixed- in Stata 12.
>
> Am I neglecting something or will -margins- not work after -menbreg- 
> and -mepoisson- in Stata 13?  Are there other new mixed commands in 
> Stata 13 after which -margins- will not work?
>
> Steve Rothenberg
> Instituto Nacional de Salud Pública
> Cuernavaca, Morelos, México

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