For the interaction it would be
0.5 -0.5 -0.5 0.5
On 5/9/17 8:32 AM, Laura Ferrero Montes wrote:
>
>Thank you for the information. I just want to be sure if I have
> understood it properly.
>If I had two groups and two sites, my design matrix would be like:
>
> GroupDescriptorFile 1
> Cl
Thank you for the information. I just want to be sure if I have
understood it properly.
If I had two groups and two sites, my design matrix would be like:
GroupDescriptorFile 1
Class PatientsGroup1
Class PatientsGroup2
Class ControlsGroup1
Class ControlsGroup2
If I want to test for the
You should make sure to have a balanced design (ie, approx the same pats
and cons at each site). Then include site as a regressor, ie, if you had
two groups and two sites, you would have four regressors. You could
then test for the effect of group, the effect of site, and the
interaction. If t
Dear FS team,
In case I have data from different centers and I would like to do a
group analysis between Patients and Controls, how different centers
effects could be regressed out? Should I have to analyze if there is
an interaction between center and group?
I have seen examples of continu
