23 Dec
2013
23 Dec
'13
3:39 a.m.
Dear Doug and experts
Using DODS model in QDEC, I've found 2 significant clusters in whole-brain cortical thickness analysis between controls and patients (2 group, 1 factor), controlling for the effect of age (one covariate). My question is how can I obtain p value for interaction term (group*age) in each cluster? Is it possible to do that analysis in FreeSurfer pipeline? Or should I extract individual cortical thickness of each cluster and test this interaction term using statistics software (e.g., SPSS)?
Thank you in advance for your help. Kim