Table 1.

Patient Demographics.

	Non-disease	Parkinson’s disease
Total patients	197	194
Male	125	103
Female	72	91
Age, mean years (SD)	65.4 (9.6)	64.7 (9.1)
H&Y stage
Mean ± SD	N/A	2.1 ± 0.7
Case (n)	N/A	I(43), II(127),III (22), IV (7), V(1)
UPDRS mean, (SD), (range)	N/A	40.4, (16.9), (10–115)
UPDRS-III mean, (SD), (range)	N/A	25.6, (11.0), (1–69)