RE: st: matrix product in stata after mvprobit

["stata_user stata_user" <stata_dofile@hotmail.co.uk>]

Thank you Professor  Jenkins ,

I have tried mvppred, but I have noticed that I can have predicted values 
for xb , p and other statistics  only for the values of the x's (independent 
variables) that are already in my data.

When I specify with the " if" statement , that I want the predicted for the 
means of the x�s, I have a message saying  � no observations�.

I do not know if it is possible to get the predicted values on the mean 
values of the x's (independent variables)

Kind regards,

Sami



> From: "Stephen P. Jenkins" <stephenj@essex.ac.uk>
> Reply-To: statalist@hsphsun2.harvard.edu
> To: <statalist@hsphsun2.harvard.edu>
> Subject: st: matrix product in stata after mvprobit
> Date: Tue, 17 Apr 2007 08:56:47 +0100
>
> ----------------------------------------------------------------------
> ----------
> From   "stata_user stata_user" <stata_dofile@hotmail.co.uk>
> To   statalist@hsphsun2.harvard.edu
> Subject   st: matrix product in stata after mvprobit
> Date   Mon, 16 Apr 2007 22:49:00 +0100
>
> ----------------------------------------------------------------------
> ----------
> Hi,
>
> I am using mvprobit (with 3 binary variables), I got the estimate
> parameter, I am looking for a way to compute x' b1, x' b2 and x' b3 ,
> with x is a vector of my predictors (at their mean values), and b1, b2
> ,b3 are the vectors of my estimates from the regression model.
>
> How to generate the vector x like with the R package, and then use the
> beta coefficients to get the values x' b1, x' b2, x' b3 ?
>
> I will use x' b1 , x' b2, x' b3 to compute the probabilities using
> mvnp of Cappellari & Jenkins.
>
> Thanks for your help.
>
> Sami
>
> =====================================
>
> -mvppred-, which is part of the -mvprobit- package, provides estimates
> of these linear predictors (and more)
>
>
> Stephen
> -------------------------------------------------------------
> Professor Stephen P. Jenkins <stephenj@essex.ac.uk>
> Institute for Social and Economic Research
> University of Essex, Colchester CO4 3SQ, U.K.
> Tel: +44 1206 873374.  Fax: +44 1206 873151.
> http://www.iser.essex.ac.uk
> Survival Analysis using Stata:
> http://www.iser.essex.ac.uk/teaching/degree/stephenj/ec968/
> Downloadable papers and software: http://ideas.repec.org/e/pje7.html
>
>
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