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Re: st: RE: Matrix
At 19:56 21/07/03 +0100, Nick Cox wrote (in response to Shige Song):
Another possibility might be -parmby-, which is part of the -parmest-
package. Type -ssc desc parmest- in Stata to find how to download the
latest Stata 8 version from SSC. Alternatively, if Shige Song does not have
Stata 8, then it is possible to download the Stata 7, 6 or 5 versions of
-parmest- from my website at
> I have a two level data set: students nested within school. Assume a
> simple case where there are only 4 variables:
> Y: math achievement, the dependent variable
> X: family background meausred in SEI, individual level covariate
> Z: school - average SEI, school level covariate
> S: school ID.
> I want to estimate a series of simple regression of Y on X
> within each
> context (each school), extract the coefficient vectors, and
> stack them
> (coefficient vector for each school) to form a coefficient matrix to
> include coeffcient vectors for all schools. What is the
> best way to do this?
by typing in Stata
net from http://www.kcl-phs.org.uk/rogernewson
At my website, you can also download a presentation I gave at the 2002 UK
Stata User Meeting on -parmest-, which gives an example of combining the
results of multiple regression models using -parmest-.
I hope this helps.
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
Tel: 020 7848 6648 International +44 20 7848 6648
Fax: 020 7848 6620 International +44 20 7848 6620
or 020 7848 6605 International +44 20 7848 6605
Opinions expressed are those of the author, not the institution.
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