Re: st: Re: Calculate beta values for mim results

["Martin Weiss" <martin.weiss1@gmx.de>]

<>

Let me spell out the line

-qui reg pr we f rep tr tu-

unabbreviated :

-quietly regress price weight foreign rep78 trunk turn-


-quietly- requests that the results of the estimation command not be shown. 
The command -regress- requests an OLS regression, followed by the dependent 
and several independent variables. It is not an IV estimator, though. 
See -ivregress- for an IV method.

BTW, welcome to the Stata community, I hope to see you on the list again 
soon. It is very good of you to let us know that you are a beginner, so in 
future, I can tailor my answer better and, for instance, not use 
abbreviations on the scale I did in my initial post...

I am not sure about the "sample" thing. Could you rephrase your question?



HTH
Martin
_______________________
----- Original Message ----- 
From: <fjgallo@mac.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Friday, May 01, 2009 2:48 AM
Subject: Re: st: Re: Calculate beta values for mim results


> Hi Martin,
>
> Thank you very much for the reply. I am VERY NEW to Stata. I am using 
> version 10. I assume that pr is the DV and we f rep tr tu are the IVs.  Is 
> there something that should replace "sample" such as _mj? I need to 
> calculate the beta values for the -mim- run on 5 imputed data sets.  Thank 
> you.
>
> Best,
> Frank
>
>
> On Apr 30, 2009, at 6:50 PM, Martin Weiss wrote:
>
> <>
>
> If you think it is appropriate to do so, you can recover beta 
> coefficients manually yourself. As far as I can tell, that is pretty  much 
> what -betacoef- does internally.
>
> *********
> *to recover beta coefficients
>
> sysuse auto, clear
> qui reg pr we f rep tr tu
> qui sum pr if e(sample)
> sca sd=r(sd)
> qui tabstat we f rep tr tu if e(sample), ///
> statistics( sd ) columns(variables) save
>
> mata
> sds=st_matrix("r(StatTotal)")'
> mata stata qui reg pr we f rep tr tu
> bs=st_matrix("e(b)")[1..5]'
> beta=bs:*sds:/st_numscalar("sd")
> beta
> end
>
> *check
> reg pr we f rep tr tu, beta noheader
> ******
>
>
> HTH
> Martin
> _______________________
> ----- Original Message ----- From: <fjgallo@mac.com>
> To: <statalist@hsphsun2.harvard.edu>
> Sent: Thursday, April 30, 2009 10:35 PM
> Subject: st: Calculate beta values for mim results
>
>
> > Dear All,
> >
> > Can I calculate beta values besides the standard estimates that the  - 
> > mim- command produces? I tried using the below commands, but  results 
> > returned no values. Thank you.
> >
> > Best regards,
> > Frank
> >
> >
> > mim: regress y x1 x2.....
> > mim, storebv
> > betacoef
> > return list
> > matrix list r(beta)
> >
> > Results:
> > r(beta) [1,23]
> > x1    x2... _cons
> > .         .           0
> >
> > *
> > *   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/
>
> *
> *   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/