Hi, FSL experts,
I am a newcomer to FSL. When using FIRST to make group analysis,
for example, 5 AD patients vs 6 controls, I need to make a design matrix using
Glm gui. I launched the Glm gui in the terminal. I chose "Higher level/nontime
series design" and specified the input number to be 11. I tried to make the
design matrix in the following different ways, but I am not quite sure which
was correct for group analysis between AD and con;
Option 1,
Group EV1
1 0
1 0
1 0
1 0
1 0
0 1
0 1
0 1
0 1
0 1
0 1
Option 2,
Group EV1
0 1
0 1
0 1
0 1
0 1
1 0
1 0
1 0
1 0
1 0
1 0
Option 3,
Group EV1 EV2
1 1 0
1 1 0
1 1 0
1 1 0
1 1 0
2 0 1
2 0 1
2 0 1
2 0 1
2 0 1
2 0 1
Which of the above options is the correct one for the difference between AD
and con?
What is the difference between option 1 and option 2?
Do they mean that AD-con and con-AD respectively?
I have tried option 1 and option 2 respectively. The results obtained from
them differ a lot! I do not quite understand that.
Thanks in advance!
Hankee
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