Michael,
I did mean center the scores, but across all individuals. This was following the advice on Mumford's page.
Do you mean to use one set of scores at a time by having separate mat files for each index score, or do you mean only use contrasts like 10 or 0 -1? In the latter case I would just say that for controls, for example, IM scores are positively correlated with FA on X tract and that for patients they are negatively correlated with X tract, but I would never say anything relating the relationship of the groups to each other?
-Carlos
|