Table 3. Diagnostic Accuracies of Selected Biomarkers.

	PD (n = 29) vs.
	All Controls	Older Control	Younger Control	AD*	Breast Cancer	MS
	n = 40	n = 20	n = 20	n = 50	n = 30	n = 10
Sensitivity %	93.1	96.6	96.6	79.3	100.0	100.0
Specificity %	100.0	100.0	100.0	90.0	93.3	100.0
PPV%	100.0	100.0	100.0	82.1	93.5	100.0
NPV %	95.2	95.2	95.2	88.2	100.0	100.0

^* The biomarkers used for this classification are those of Table 5 in our previous work [18] ; all others are the biomarkers identified in Table 2 .