Dear SPM:ers,
I have a dataset with two groups, patients and controls. These have two
conditions, baseline and activation. It's probably simple, but I seem to
have a problem choosing the correct SPM design type for this study. I
want to look at several things:
* Compare controls, baseline vs. activation
* Compare patients, baseline vs. activation
* Compare baseline, controls vs. patients
* Compare activation, controls vs. patients
I thought "multi-group: conditions & covariates" would be the correct
one for all of these, but SPM won't let me put "0" to exclude columns
when I specify the contrast. Do I have to choose a separate design for
all four of these analyses? Please help.
Thank you!
Best regards,
Lena Edström
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