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st: RE: aflogit formula?
I think the formula is the one in Greenland and Dreschler(1991). Another
useful paper is Bruzzi et al. (1985). The definitive reference for
-aflogit- is Brady (1998), which however probably won't easily be found
in a literature search, but can be ordered (with other Stata Technical
Bulletins) from#
http://www.stata.com/products/stb/index.html
-aflogit- is an old program that needs an update (or even a
replacement), but nobody seems to have the time to do this.
I hope this helps.
Roger
References
Brady A. sbe21: Adjusted population attributable fractions from logistic
regression. Stata Technical Bulletin 1998; STB-42: 8-12. Reprinted in:
Stata Technical Bulletin Reprints Vol. 7, 1998.
Bruzzi P, Green SB, Byar DP, Brinton LA, Schairer C. Estimating the
population attributable risk for multiple risk factors using
case-control data. American Journal of Epidemiology 1985; 122(5):
904-914.
Greenland S, Dreschler K. Maximum likelihood estimation of the
attributable fraction from logistic models. Biometrics 1991; 49:
865-872.
Roger 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: [email protected]
www.imperial.ac.uk/nhli/r.newson/
Opinions expressed are those of the author, not of the institution.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Marc Campo
Sent: 05 January 2007 18:17
To: Marc Campo; [email protected]
Subject: st: aflogit formula?
Does anyone know the formula that the Aflogit command
uses to calculate the AR based on ORs? Or, can
someone at least explain how it is done. I have
looked at the program in my ado files but I can't
really follow it.
Thanks!!!
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