Table 2.

Classification performance metrics across outer folds for the best-performing region combinations. Each row represents a single outer fold result for the specified region set

Regions	nCV outer fold	AUC	Accuracy	Sensitivity	Specificity
S2	1	0.64	0.55	0.47	0.67
S2	2	0.70	0.50	0.45	0.60
S2	3	0.48	0.62	0.67	0.55
S1, S2	1	0.63	0.59	0.71	0.42
S1, S2	2	0.81	0.73	0.80	0.60
S1, S2	3	0.65	0.55	0.56	0.55
S1, S2, F	1	0.80	0.69	0.88	0.42
S1, S2, F	2	0.71	0.63	0.65	0.60
S1, S2, F	3	0.79	0.66	0.67	0.64
S1, S2, I1, F	1	0.76	0.66	0.76	0.50
S1, S2, I1, F	2	0.65	0.53	0.45	0.70
S1, S2, I1, F	3	0.74	0.66	0.72	0.55
All	1	0.58	0.52	0.65	0.33
All	2	0.53	0.60	0.75	0.30
All	3	0.62	0.55	0.67	0.36