Table 1. Demographic variables of PD patients with RLS [PD-RLS(+)] and without RLS [PD-RLS(−)].

	PD-RLS(+) (n=16)	PD-RLS(–) (n=58)	p
Age, years	66.5±11.3	65.3±8.5	0.637
Age at PD onset, years	63.50±11.48	62.86±9.30	0.845
Sex
Male	4 (25.0)	26 (44.8)	0.153
Female	12 (75.0)	32 (55.2)	-
Duration of PD, years	3.0±2.6	2.8±4.2	0.812
Duration of RLS, years	2.0±2.6	-	-
IRLS score	22.7±10.7	-	-
Drug-naïve patients	2 (12.5)	14 (24.1)	0.496

Data are mean±SD or n (%) values.

IRLS: international restless legs syndrome, PD: Parkinson's disease, RLS: restless legs syndrome