> If a categorical varialbe such as sex is included as a nuisance variable in
> the VBM group comparison, would one choose 'no centering' rather than
> 'centre around overall mean'?
I don't think it would make any difference to the statistics either way.
Best regards,
-John
--
Dr John Ashburner.
Functional Imaging Lab., 12 Queen Square, London WC1N 3BG, UK.
tel: +44 (0)20 78337491 or +44 (0)20 78373611 x4381
fax: +44 (0)20 78131420 http://www.fil.ion.ucl.ac.uk/~john
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