If you want to look for an interaction between two groups, then use the
contrast
[1 -1 -1 1]
We don't have a way to fit nonlinear models, but you can apply a
nonlinearity to the blood data and then include it as a linear covariate
doug
On 06/28/2014 06:20 PM, Jacobs H (NP) wrote:
>
> Dear Fre
Dear FreeSurfer team,
We have processed our T1 data of 4 groups of subjects: controls and patients of
varying degrees illness.
Now we want to perform :
- a F-test to compare the 4 groups (we have one covariate that we want to take
into account)
- a F test to investigate a differential effect o
