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RE: st: storing coefficients of reg3 command


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: storing coefficients of reg3 command
Date   Tue, 19 Feb 2008 13:44:21 +0000 (GMT)

--- "Armelini, Guillermo" <DOCGArmelini@iese.edu> wrote:
> Now, and following your example, if you want to store the beta
> coefficients of the variable "Consump" in the second row of the
> matrix "foo". How can I do that? In other words, which is the
> mechanism that allows me to store data row by row in my results'
> matrix?

Notice that I am not using the coefficient of the *variable* consump,
but of the *variable* wagepriv in the *equation* consump. (this
corresponded most what you intended to do, as far as I understood your
question: the first variable in the first equation)

How you build a matrix is discussed in -help matrix define-. You can
stack a row underneath an existing matrix using \, as is shown in the
example below:

*---------------- begin example -----------------
webuse klein
reg3 (consump wagepriv wagegovt)    ///
     (wagepriv consump govt capital1) if year < 0
matrix foo = [consump]_b[wagepriv], ///
             [consump]_b[wagepriv]/[consump]_se[wagepriv]
matrix list foo

reg3 (consump wagepriv wagegovt)    ///
     (wagepriv consump govt capital1) if year >= 0
matrix foo = foo \ ///
             [consump]_b[wagepriv], ///
             [consump]_b[wagepriv]/[consump]_se[wagepriv]
matrix list foo
*----------------- end example ------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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