# st: RE: Compute means of coefficients

 From "Kieran McCaul" To Subject st: RE: Compute means of coefficients Date Fri, 8 Aug 2008 06:31:03 +0800

```If you want to capture the regression coefficients and then calculate
their mean, which is what your question seems to imply, then this would
do that.

statsby bY_A=_b[Y_A] bV_A=_b[V_A] bDD=_b[DD] bD_BE=[D_BE], by(year)
saving(filename.dta, replace): reg Y_A V_A DD D_BE

use filename.dta, clear
summ bY_A bV_A bDD bD_BE

______________________________________________
Kieran McCaul MPH PhD
WA Centre for Health & Ageing (M573)
University of Western Australia
Level 6, Ainslie House
48 Murray St
Perth 6000
Phone: (08) 9224-2140
Phone: -61-8-9224-2140
email: kamccaul@meddent.uwa.edu.au
http://myprofile.cos.com/mccaul
_______________________________________________

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Christoph
Merkle
Sent: Friday, 8 August 2008 6:05 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: Compute means of coefficients

Hi,

I'm using the code below for year-by-year regressions in a panel. Is
there some possibility to calculate the means of the regression
coefficients conveniently in STATA? And also the t-statistics for the
means?
(Would that mean to create a variable from the coefficients first or
is there a direct approach?)

forvalues year = 1964/1996 {
reg Y_A V_A DD D_BE if year == `year'
}

Thanks

Christoph Merkle
PhD Student
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```