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I was not sure how to modify the last line in your code in order to calculate adjusted values accounting for age, sex, and ICV for each participant (this is a three group design).

Your code:

There is not an easy way to do it, but you can do it in matlab cd glmdir X = load('Xg.dat'); y = load('perm.th30.abs.y.ocn.dat'); beta = inv(X'*X)*X'*y; yhat = X(:,[i j k ...]*beta([i j k ...])

where i j k ... indicate the factors you want keep in your data. Each factor gets a column in the design matrix (and a beta). If you need help figuring this out, send the fsgd file.

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Jessica Hua, M.A. Cognitive and Emotional Control Lab Doctoral Candidate Clinical Psychology University of Missouri