Oh, so now you care about covariates in multiple regression. Midwest snob!!
Bob
--- "John D. West" wrote:
Hello all.
I am currently running a multiple regression in SPM5 to find the a correlation between my image data and another value and have also included 2 covariates of no interest. Once I get the results I can extract the 1st eigenvariate for a cluster by using the VOI tool, but this (as far as I can tell) caluculates the 1st eigenvariate of the data not adjusted for the 2 covariates. Therefore, if I use the matlab corrcoef function I get an r and p value that is not representitive of the SPM results. Can anyone tell me how I can get the adjusted eigenvariate or suggest another way of getting the Pearson correlation coefficient for the 1st eigenvariate for a particular cluster?
Your help is most appreciated! Thanks.
Sincerely,
John D. West
IU School of Medicine
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