Table 1.

The demographic characteristics and clinical features of the patients with Parkinson's disease (PD).

		Parkinson's disease (n = 22)	Healthy subjects (n = 20)	P-value (PD vs. HS)
Baseline demographic characteristics
Age, median (IQR)		49.7 (46.8–62)	49.9 (43.5–50.9)	0.21
Sex, N (%)	Man	16 (72.7)	6 (30)	0.01
	Woman	6 (27.3)	14 (70)
Education, years median (IQR)		19 (17–20)	18 (16.7–20)	0.98
Laterality Preference Index (LPI)
Handedness, N (%)	Right	19 (86.4)	20 (100)	0.48
	Left	2 (9.1)	0 (0)
Parkinson's disease patients' characteristics
Time since diagnosis (years), median (IQR)		2.6 (1.57–3.8)
Predominant side at onset, N (%)	Right	17 (77.3)
	Left	5 (22.7)
Hoehn & Yahr stage, N (%)	Unilateral	19 (86.4)
	Bilateral	3 (13.6)
MDS-UPDRS III, median (IQR)		18 (14–33)