(b).

Method	Timepoints	ACC	SEN	SPE	AUC
SVM	1st visit	80.0	84.5	78.9	0.857
	1st + 2nd visit	82.0	86.1	79.7	0.871
PCA	1st visit	68.3	65.2	70.0	0.743
	1st + 2nd visit	78.8	80.7	68.4	0.808
RBF	1st visit	62.7	64.1	59.3	0.676
	1st + 2nd visit	89.2	91.8	86.2	0.934
RF	1st visit	80.4	84.2	77.6	0.855
	1st + 2nd visit	82.4	86.3	79.5	0.876