Table 1. Clinical and demographic data and Neuropsychological task performances of WD patients and HCs.

		WD (N = 35)	HC (N = 35)	P
Gender (M:F)		23/12	24/11	-
Age at investigation (years,mean±SD)		22.66 (3.50)	22.80 (3.42)	0.863
Years of school education (years,mean±SD)		11.26 (2.76)	11.60 (3.13)	0.629
Wechsler Adult Intelligence Scale-Revised Chinese version (WAIS-RC) (mean±SD)		99.34 (10.84)	101.53 (11.98)	0.388
Verbal fluency (mean±SD)		11.20 (2.15)	10.80 (1.48)	0.362
DT	Digits forwards (mean±SD)	7.77 (0.55)	7.94 (0.34)	0.119
	Digits backwards (mean±SD)	4.97 (1.15)	5.06 (1.18)	0.547
Hamilton Anxiety Scale (HAMA) (mean±SD)		2.86 (2.05)	2.14 (2.20)	0.164
Hamilton Depression Scale (HAMD) (mean±SD)		2.94 (2.09)	2.25 (2.20)	0.185
United Wilson's Disease Rating Scale (UWDRS) (mean±SD)		19.43 (9.86)	-	-
Duration of disease (years,mean±SD)		6.68 (4.94)	-	-