Table 4.

Relationship between YSR (Empirically Scales) and Internet Addiction (CIAS) Adjusted on Sociodemographic Variables

	Externalizing problems	Internalizing problems	Problem behavior total
	Odds Ratio (95% CI)	Odds Ratio (95% CI)	Odds Ratio (95% CI)
Gender Girls Boys(ref.)	2.03 (1.23-3.34) 1.00	2.00 (1.21-3.31) 1.00	1.17 (0.69-1.98) 1.00
Age(years) 15-18 12-14(ref.)	1.70 (1.01-2.87) 1.00	1.15 (0.70-1.88) 1.00	1.56 (0.89-2.72) 1.00
Father Education Under Diploma Diploma College Education(ref.) Birth order Third child and after Second child First child(ref.) consulting service Yes No(ref.) Psychiatry service Yes No(ref.) Internet addiction Clinical Normal(ref.)	2.32 (1.21-4.11) 1.80 (1.01-3.22) 1.00 2.00 (1.21-4.11) 1.00 5.84 (3.61-9.43) 1.00	0.48(0.25-0.91) 0.55 (0.31-0.96) 1.00 2.14 (0.93-4.91) 1.00 5.03 (3.05-8.28) 1.00	2.32 (1.119-4.53) 0.80 (0.43-1.48) 1.00 3.58 (1.40-9.17) 1.00 6.51(3.71-11.60) 1.00

YSR: Youth Self-Report; CIAS: Chen Internet Addiction Scale