Sounds like something when wrong. Can you tar up the qdec output directory and drop it to me at the file drop below?
doug
Joana Braga Pereira wrote:
Dear Freesurfer experts,
I've just finished running a qdec analysis of a comparison of cortical thickness between controls and patients with 2 covariates and found a strange result.
When i set the threshold at FDR some clusters appear in red which are the corrected results from my analysis. However the rest of the cortex acquires a grey homogeneous colour that seems strange.
When i check the thresholds in qdec i found that they were set from 100 to -100...
Any ideas why this happened?
Afterwards i did the mri_glmfit simulations with these results from qdec and saw that the summary cluster table indicated a single bilateral cluster of more than 70 000 mm size, as if the program considered the homogenous grey colour as a significant result between groups.
Any help would be greatly appreciated.
Best, Joana
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