External Email - Use Caution Hi Doug,
Recently I started working on freesurfer for volume based analysis. For QDEC, I need to include more than 2 variables. For example if I include patients who hail from different places like statutory town, census town and rural. In present scenario, can I include all three as covariates. Here is the error that qdec showing while running GLM: "ERROR: Subject 2 seems to have a mismatched number of discrete factors (expected 4, found 1)" "Reading source surface /usr/local/freesurfer/subjects/fsaverage/surf/lh.white ERROR: no contrasts specified." "Error in Analyze: command fai;ed mri_glmfit --y /usr/local/freesurfer/subjects/qdec/qdecAnalys/y.mgh --fsgd /usr/local/freesurfer/subjects/qdec/qdecAnalys/qdec.fsgd dods -glmdir /usr/local/freesurfer/subjects/qdec/qdecAnalys/ -surf fsaverage lh -label /usr/local/freesurfer/subjects/fsaverage/label/lh.aparc.label" Could you help us out in this regard. Would appreciate any help!! Korann
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