Hello List,
I have a problem about paired t test and unpaired t test.
We have two groups, patients and controls, who finished same task for two times, baseline and treatment.
I learned how to get paired t test for the two groups from your website,
http://www.fmrib.ox.ac.uk/fsl/feat5/detail.html#PairedTwoGroupDifference.
However, I am more interested in the group differences for the time contrasts, such as patients showed more or less activation compared with controls after the intervention. I think I need to combine the two designs, Unpaired Two-Group Difference after Paired Two-Group Difference for this. But I am not sure what I did is correct. Can you give me some suggestions ?
Thanks in advance,
Hongyu Yang
|