Feature importance for the linear GBM. Feature importance by rank order. Right pallidal CBF (Right-Pallidal_CBF), left lateral occipital CBF (ctx-lh-lateraloccipital_CBF), psychomotor Z score (Motor_Psychomotor_Z), right pericalcarine volume (rh_pericalcarine_Vol), frontoparietal x ventral attention connectivity (FP_x_VAN), visual x dorsal attention connectivity (VIS_x_DAN), recent_CD4 T-cell count, memory_x_cerebellum connectivity (MEM_x_CEREB), dorsal attention (DAN) intranetwork connectivity, and right pars triangularis volume (rh_parstrianularis_VOL).