11 Oct
2019
11 Oct
'19
2:34 p.m.
External Email - Use Caution
Hello Experts,
I would like to include covariates in the freesurfer repeated anova steps https://surfer.nmr.mgh.harvard.edu/fswiki/RepeatedMeasuresAnova. When i tried including 3 covariates, mri_glmfit complained about "martix is ill-conditioned".
How do i fix it?
Below is an example my fsgd file. I've also attached the matrix design in the email.
GroupDescriptorFile 1 Class PsyDis1 Class PsyDis2 Variables TP1vsTP2 Age Llesion Rlesion Input Psy1_Pre.long.Psy1 PsyDis1 1 68 96 61 Input Psy1_6mos.long.Psy1 PsyDis1 -1 68 96 61 Input Psy2_Pre.long.Psy2 PsyDis2 1 39 217 140 Input Psy2_6mos.long.Psy2 PsyDis2 -1 39 217 140
contrast: 0 0 1 0 0
Best, Paul