Hi Stijn,
> It seems logical to demean gender, since the "mean gender"
> is not equal for the groups (groups aren't matched). What do
> you exactly mean by splitting the age per group? There might
> be interaction with other variables that are continuous.
Please have a look at the archives:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind1102&L=FSL&P=R20977&1=FSL&9=A&I=-3&J=on&d=No+Match%3BMatch%3BMatches&z=4
> So if I demean the gender column, the design should be
> okay? How about the randomise script execution? Is this
> correct:
> randomise -i all_FA_skeletonised -o tbss -m
> mean_FA_skeleton_mask -d design.mat -t design.con -n 5000
> --T2 -V
Looks fine to me...
Cheers,
Gwenaelle
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Gwenaëlle Douaud, PhD
FMRIB Centre, University of Oxford
John Radcliffe Hospital, Headington OX3 9DU Oxford UK
Tel: +44 (0) 1865 222 523 Fax: +44 (0) 1865 222 717
www.fmrib.ox.ac.uk/~douaud
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