Hello,
This might not be the best group to ask the question that we have for our problem but any insight about how to solve this is very much appreciated.
Problem:
We have 3 groups with N1=15; N2=300 and N3 = 120 where Ni is the number of subjects in group i.
We want to see if there is any statistical difference (volume and FA maps) between N1 and N2, N1 and N3 and N2 and N3 after controlling for several covariates of no interest.
We want to use nonparameteric statistical tools to check for those differences.
Can we use randomise tool in fsl to check for these differences? And if we find any differences then how can we convince ourselves that this may not be because of group imbalance.
Thank you for any insight into this problem.
Regards.
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