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st: Results returned by -svy- in Stata 10


From   "Newson, Roger B" <r.newson@imperial.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Results returned by -svy- in Stata 10
Date   Fri, 7 Mar 2008 16:25:15 -0000

Fellow Statalisters (especially StataCorp):

I was investigating the -svy- part of Stata 10 yesterday, and checked
the results returned by -svy-, both in the on-line help for -svy- and in
the manuals under -[SVY] svy-. I was alarmed to notice that, in the
"Matrices" subsection of the Returned Results, there was no mention of
either -e(b)- (the row vector of parameter estimates) or -e(V)- (the
matrix of covariance estimates). Both of these returned results are
mentioned in the corresponding section of the Stata 9 manuals, although,
of course, the Stata 9 on-line help does not mention returned results.
However, on running some Examples from the manuals, I found that -e(b)-
and -e(V)- are still returned. This was reassuring, as both of these
results are assumed to exist by my SSC package -parmest-.

Is there any particular reason why -e(b)- and -e(V)- are no longer
mentioned in the documentation? Has there been some kind of oversight
that nobody else has noticed? Or is there a hidden long-term agenda, in
which these returned results have been de-publicized and de-documented
in preparation for withdrawing them at some time in the future?

Best wishes (and thanks in advance)

Roger


Roger B Newson
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: r.newson@imperial.ac.uk 
Web page: www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/pop
genetics/reph/

Opinions expressed are those of the author, not of the institution.

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