Table 1.

Demographics data of recruited individuals.

	Whole Cohort		Subset with PD
	Con	PD	2–4 years	≥ 10 years
Subject number	30	58	28	30
Age (range)	67.4 ± 9.0 (52–83)	68.1 ± 9.0 (48–84)	69.0 ± 10.3 (48-84)	67.2 ± 7.6 (53–80)
Gender (male: female)	0.5 (10: 20)	1.0 (29: 29)	1.0 (14: 14)	1.0 (15: 15)
MDS-UPDRS III (range)		49.6 ± 19.4 (10–97)	38.4 ± 11.0 (10–58)	60.0 ± 19.9 (28–97)
HY (range)		2.4 ± 1.2 (0–5)	1.6 ± 0.8 (0–4)	3.0 ± 1.1 (2–5)
Disease Duration, year (range)		10.8 ± 7.9 (2–27)	3.1 ± 0.7 (2–4)	17.7 ± 4.3 (10–27)

Con control, PD Parkinson’s disease, MDS-UPDRS III Movement Disorders Society Unified Parkinson’s disease Rating Scale part III, HY Hoehn and Yahr.