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Hello FreeSurfer Developers,
I'm doing the LME tutorial, and I have some questions .
1. Why don’t we need to put the healthy controls in the designed matrix X?
2. What’s the interpretation of the first row of the contrast matrix [1 0 0 0 0], does it mean first group minus healthy group?
3. There is a pvalue and a vector sgn from the result of F-test, I know the interpretation of the sgn, but I don’t know the hypothesis of the pvalue, could you please help me with that?
Thanks in advance!
Best regards, Guodong