Dear FSL experts,
I have 8 subjects, each scanned 2 times at 2 times point. The fisrt 5 subjects are in drug group, and another 3 are in placebo group. I want to compare results of those 2 groups. Are the design and contrasts below correct?
EB EV1 EV2 EV3 EV4 EV5 EV6 EV7 EV8 EV9 EV10
1 1 0 1 0 0 0 0 0 0 0
1 -1 0 1 0 0 0 0 0 0 0
2 1 0 0 1 0 0 0 0 0 0
2 -1 0 0 1 0 0 0 0 0 0
3 1 0 0 0 1 0 0 0 0 0
3 -1 0 0 0 1 0 0 0 0 0
4 1 0 0 0 0 1 0 0 0 0
4 -1 0 0 0 0 1 0 0 0 0
5 1 0 0 0 0 0 1 0 0 0
5 -1 0 0 0 0 0 1 0 0 0
6 0 1 0 0 0 0 0 1 0 0
6 0 -1 0 0 0 0 0 1 0 0
7 0 1 0 0 0 0 0 0 1 0
7 0 -1 0 0 0 0 0 0 1 0
8 0 1 0 0 0 0 0 0 0 1
8 0 -1 0 0 0 0 0 0 0 1
Contrast:
mean G1, 1st scan 5 0 1 1 1 1 1 0 0 0
mean G1, 2nd scan -5 0 1 1 1 1 1 0 0 0
mean G2, 1st scan 0 3 0 0 0 0 0 1 1 1
mean G2, 2nd scan 0 -3 0 0 0 0 0 1 1 1
G1 > G2, 1st scan 5 -3 1 1 1 1 1 -1 -1 -1
G1 > G2, 2nd scan -5 3 1 1 1 1 1 -1 -1 -1
Any help you can provide will be greatly appreciated.
Best regard,
Kim
|