Table 2.

Correlation among scores of the short-form of the IOS-Qs and psychological and psychiatric characteristics

	Psychological characteristics			Psychiatric characteristics
	distress	sleeping problems	importance of family	all mental disorders	mood disorders	depressive disorders	anxiety disorders
Factor 1 (social isolation)	0.151**	0.130*	−0.144**	0.270***	0.278***	0.251**	0.181**
Factor 2 (misuse and dependence)	0.104*	0.142**	−0.150**	0.138**	0.070	0.046	0.144*
Total	0.151**	0.178***	−0.170**	0.262***	0.223***	0.201**	0.196*

^*p < 0.05,

^**p < 0.01

^***p < 0.001.

IOS-Qs, internet overuse screening questionnaire.