Dear FSL experts:
I colloected 56 patients with cognitive impairment consecutively. I want to analyses these data using TBSS, one group. All these patients had scores of cognitive scale. I want to observe the relationship between FA and the degree of cognitive impairment.
I choose score of cognitive scale as main EVs, and age, sex, education as co-variates. The following are my design.mat and design.con files.
design.mat:
/NumWaves 4
/NumPoints 55
/PPheights 2.600000e+01 2.000000e+00 7.900000e+01 5.000000e+00
/Matrix
2.200000e+01 2.000000e+00 6.400000e+01 1.000000e+00
2.300000e+01 2.000000e+00 6.800000e+01 2.000000e+00
1.500000e+01 2.000000e+00 6.100000e+01 3.000000e+00
2.600000e+01 1.000000e+00 7.400000e+01 1.000000e+00
.............
design.con:
/ContrastName1 ev1_pos
/ContrastName2 ev1_neg
/NumWaves 4
/NumContrasts 2
/PPheights 1.630884e+01 1.630884e+01
/RequiredEffect 2.339 2.339
/Matrix
1.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
-1.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
I don not know whether the above design is correct.
Thanks!!