Table 1.

Demographics and clinical characteristics of pathological internet use and healthy control groups.

Variables	Pathological internet use group (n = 24)	Healthy control group (n = 25)	P-value
Age (years)	21.42 ± 1.20	22.00 (20.00-22.5)	0.82#
Gender male (n, %)	16 (66.7)	18 (72.0)	0.69#
Internet age (years)	8.54 ± 3.12	8.00 (7.00-10.00)	0.93#
Internet time (hours/week)	45.00 (36.25-49.75)	19.56 ± 9.84	<0.001*
IAT	75.00 ± 6.85	29.52 ± 7.20	<0.001*
SDS	57.00 ± 12.86	37.64 ± 8.50	<0.001*
SAS	47.00 (41.50-64.50)	34.48 ± 6.65	<0.001*
PSQI	9.17 ± 3.16	4.72 ± 3.13	<0.001*
BIS-11	79.08 ± 9.52	62.52 ± 9.39	<0.001*

IAT, Young's Internet Addiction Test; SDS, Self Rating Depression Scale; SAS, Self Rating Anxiety Scale; PSQI, Pittsburgh Sleep Quality Index; BIS-11, Barratt Impulse Scale.

^#Comparison between PIU subjects and healthy controls at baseline, P > 0.05.

^*Comparison of clinical scores between PIU group and HC group, P < 0.001.