Table 3. The performance of the RF models based on the six feature groups.

Feature group	Coverage ratio (%)	No. of features	Sn (%)	Sp (%)	Acc (%)	MCC
G1	90	139	84.64±5.62	83.87±6.97	84.24±4.28	0.6873±0.08
G2	80	106	85.00±9.34	83.87±6.08	84.41±5.58	0.6915±0.11
G3	70	81	85.71±4.45	84.19±6.66	84.92±3.93	0.6997±0.07
G4	60	62	86.07±4.89	84.52±7.10	85.25±5.06	0.7069±0.10
G5	50	47	85.00±7.86	83.87±7.45	84.41±5.52	0.6917±0.11
G6	40	34	84.64±5.34	83.87±9.05	84.24±3.85	0.6902±0.07