Table 1. Study Population Characteristics.

Characteristics	CON (n = 52)	AD (n = 46)	DLB (n = 33)	PD (n = 38)	PDD (n = 22)	SYN (n = 93)
Age (yrs)	64±10***	78±6	74±6	64±9***	75±6	70±9
Sex F/M (%)	50/50	76/24	55/45	47/53	27/73	45/55
Total MMSE	28.5±1.1	20.6±4.3	20.2±5.6	28.5±1.2	23.1±4.4	24.3±4.4
PD severity#	ND	ND	ND	2.3±0.8	ND	2.3±0.8†

^***p<0.001 when compared to AD, DLB and PDD.

^#Modified Hoehn and Yahr Staging scale (0–5) [58].

^†) Only determined for the PD group. ND) not determined.