Table 1.

Subjects’ clinical and demographic data

Variable	Controls (n=48)	Experimental group (n=186)	P value
Male (%)	30 (62.5)	106 (57.0)	0.17
Age	66.9±10.5	66.5±8.6	0.77
Hoehn and Yahr stage	2.6±0.6	2.6±0.5	0.75
Disease duration (years)	7.4±5.3	9.0±5.6	0.72
Education (years)	10.9±4.2	10.2±3.9	0.54