st: -metan- doesn't seem to do the Welch F-test

[Roger Newson <r.newson@imperial.ac.uk>]

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
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Email: r.newson@imperial.ac.uk
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