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Re: st: how to make xi dummies inherit labels


From   Roger Newson <roger.newson@kcl.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to make xi dummies inherit labels
Date   Fri, 04 Oct 2002 11:15:46 +0100

At 10:29 04/10/02 +0100, Roger Harbord wrote:
--On 04 October 2002 04:07 -0500 Fred Wolfe <fwolfe@arthritis-research.org> wrote:


At 09:57 AM 10/4/2002 +0100, you wrote:
If version 1.1.3 is available from sealedenvelope.com there's something
wrong with the way it's interfacing with -net- :
You can also get the most up to date version by ssc install reformat,
replace. I just did.

! version 1.1.3  26Aug02 arb
*! Reformats the output from regression commands
*! (c) Sealed Envelope Ltd, 2002

Then why doesn't it work for me???  :
For what it's worth, an alternative way forward for Roger might possibly be to use my packages -parmest-, -factext- and -descsave-, all downloadable from SSC. The -parmest- package creates post-estimation data sets with 1 observation per model parameter (or per parameter per by-group) and data on estimates, confidence limits and P-values. And, if some of these parameters belong to -xi- dummies, then it is possible to reconstruct the variable from which the dummies were generated (complete with value labels) using the -descsave- and -factext- packages. For instance, if, in the -auto- data, we define a variable -country- indicating a car's country of origin, then we can type

tempfile tf1
descsave country,do(`tf1',replace)
parmby "xi:regress mpg i.country",label norestore
factext,do(`tf1')

and create a data set in the memory with 1 observation per model parameter, containing a variable -country- (with value labels from the original variable) denoting the country corresponding to the parameter.

I gave a presentation about how to do this at the 2002 UK Stata User Meeting, and it can be downloaded from http://ideas.uqam.ca/ideas/data/bocusug02.html.

I hope this helps.

Roger


--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
United Kingdom

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
Email: roger.newson@kcl.ac.uk

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

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