Table 2.

Results of SVM analysis for classifying patients into PSD versus non-PSD memberships.

Variables	NPV	PPV	Accuracy	Sensitivity	Specificity	AUC	95% CIs
MFG	0•65	0•79	0•73	0•73	0•73	0•80	0•74–0•86
CDP	0.63	0.79	0.71	0.70	0.73	0.75	0.69–0.82
MFG+ CDP	0•68	0•89	0•78	0•70	0•88	0•85	0•80–0•90

Note: MFG: GMV of middle frontal gyrus; CDP: clinical and demographic parameters (age, sex, education level, duration of illness, TIV and scores of MBI); AUC: area under curve; PPV: positive predictive value; NPV: negative predictive value; CIs: confidence intervals.