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Re: st: Parameters returned by -lincom- after -logistic-


From   Roger Newson <[email protected]>
To   [email protected]
Subject   Re: st: Parameters returned by -lincom- after -logistic-
Date   Mon, 09 May 2005 15:38:48 +0100

I think I have found the answer to this particular sub-query. As stated on Page 9 of -[SVY]-, -lincom- after -svy- commands automatically fails in the case of vector degrees of freedom, which corresponds to

"`e(complete)'"=="available"

This can be confirmed by looking inside the official Stata 8 file -_svylc.ado-. I for one would be surprised if Stata 9 is any different in this respect. Thanks to Richard Williams for all the pointers so far.

Roger


At 14:43 09/05/2005, I wrote:

At 13:30 09/05/2005, Richard wrote:

p. 37 of the Stata 8 svy manual gives returned values and some formulas. e(df_m) and e(df_r) don't quite correspond to the d.f. reported by the F stat but I suspect there is some trivial formula that shows the relationship. I know that, in writing my own program, I had to make sure e(df_r) was available when svy was used, otherwise I got z's instead of t's reported.

I think the -e(df_r)- of Page 37 of -[SVY]- probably applies to the case of scalar degrees of freedom, but not to the case of vector degrees of freedom.

Roger

--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
Division of Asthma, Allergy and Lung Biology
King's College London

5th Floor, Capital House
42 Weston Street
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United Kingdom

Tel: 020 7848 6648 International +44 20 7848 6648
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  or 020 7848 6605 International +44 20 7848 6605
Email: [email protected]
Website: http://phs.kcl.ac.uk/rogernewson/

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

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