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st: -metan- doesn't seem to do the Welch F-test
From
Roger Newson <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: -metan- doesn't seem to do the Welch F-test
Date
Mon, 11 Apr 2011 12:24:50 +0100
I have a query re the -metan- command. When meta-analysing statistics
from continuous data (eg arithmetic mean differences and geometric mean
ratios), it seems to be using a chi-squared heterogeneity test, instead
of the Welch heterogeneity F-test, which was recommended in the seminal
paper by Cochrane (1954) for the case of continuous data. Is there a
reason for this?
Best wishes (and thanks in advance)
Roger
Reference
Cochrane, W. G. 1954. The combination of estimates from different
experiments. Biometrics 10(1): 101-129.
--
Roger B Newson BSc MSc DPhil
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]
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/
Opinions expressed are those of the author, not of the institution.
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