CUB and Sushi Multiple Domains (CSMD1) Gene Polymorphisms and Susceptibilities to Idiopathic Parkinson’s Disease in Northern Chinese Han Population: A Case-Control Study

Table 1

Demographic characteristics of PD group and control group.

Variable	PD (n = 423)	Control (n = 465)
	No. (%)	No. (%)
Age (mean ± SD)
All	64.1 ± 9.2	63.2 ± 9.7	0.216
Male	64.3 ± 9.9	63.4 ± 9.9	0.350
Female	63.9 ± 8.4	63.1 ± 9.5	0.421
Sex
Male	224 (53.0)	246 (52.9)	—
Female	199 (47.0)	219 (47.1)	0.988
Age at onset of PD
≤50	42 (9.9)	66 (14.2)	—
＞50	381 (90.1)	399 (85.8)	0.052

PD: Parkinson’s disease; SD: standard deviation.