Fig. 4
Associations between Pittsburgh Sleep Quality Index (PSQI) and cortical thickness in regions of interest (ROIs) generated from vertex-wise analyses. a Association between mean cortical thickness in the regions of interest (ROI) generated from the mild traumatic brain injury (mTBI)-only whole-brain analysis and Pittsburgh Sleep Quality Index (PSQI) in individuals with mTBI only (n = 57). b Association between mean cortical thickness in the ROI generated from the comorbid mTBI and post-traumatic stress disorder (PTSD) whole-brain analysis and PSQI in individuals with comorbid mTBI and PTSD (n = 129). c Association between mean cortical thickness in the ROI generated from the whole-brain interaction analysis and PSQI in individuals with mTBI (n = 186) and individuals without mTBI (n = 254)