Table 1. Summary of participants in the discovery (n = 108) and validation cohorts (n = 24) diagnosed with AD, PD, or HCs.

Cohort	Group		n	Age
Discovery	HC-I	M	29	75 ± 8
		F	24	68 ± 6
	AD	M	14	74 ± 10
		F	14	67 ± 9
	HC-Isub	M	22	73 ± 5
		F	12	71 ± 2
	PD	M	11	70 ± 5
		F	6	71 ± 3
	HC-II	M	4	40 ± 9
		F	6	40 ± 10
Validation	HC-V	M	6	71 ± 10
		F	9	70 ± 6
	AD-V	M	4	74 ± 12
		F	5	71 ± 10