20 Dec
2006
20 Dec
'06
3:13 p.m.
I need to compare the regional cortical thickness between two groups of subjects using the statistical parametric maps provided by Freesurfer.
So, I have two classes (patients and healthy volunteers) and one variable (age), if I want correct for age the difference in cortical thickness between these two groups it is enough to write 1, -1, 1 in the contrast vector?
thanks
Valentina