Hi Anastasia:
Just a quick question. When comparing FA, AD, RD etc between 2 groups, do
we need to use covariates like Intra Cranial volume or AGE?
If the answer is no, should I do an ANOVA or will T tests be sufficient?
thank you,
Alan
___
Definitely age. You don't need to adjust for volume since these are not
volume/area/length measures that you're comparing. You should also check
for any group differences in motion before you proceed and make sure your
groups are matched in terms of motion. If you do separate t-tests for each
Thank you so much.
Alan
On Tue, Aug 20, 2013 at 11:20 AM, Anastasia Yendiki
ayend...@nmr.mgh.harvard.edu wrote:
Definitely age. You don't need to adjust for volume since these are not
volume/area/length measures that you're comparing. You should also check
for any group differences in
