Table 2.

Association between Internet Addiction (CIAS) and Sociodemographic Variables Based on Multiple Logistic Regression Model

Parameters	Model 1		Model 2		Model 3		Model 4
	OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value
Sex
Girl	1.30 (0.93,1.80)	0.113	1.44 ( 1.02,2.04)	0.038	1.45 (1.02,2.05)	0.037	1.43 (1.004,2.04)	0.047
Boy(ref.)	1.00		1.00		1.00		1.00
Age(years)
12-14	0.80 (0.58,1.12)	0.201	0.83 (0.58,1.18)	0.304	0.83 (0.58,1.18)	0.300	0.82 (0.57,1.17)	0.276
15-18(ref.)	1.00		1.00		1.00		1.00
Mother Education
Under Diploma			1.04 (0.57,1.86)	0.902	1.04 (0.58,1.87)	0.888	1.10 (0.60,1.99)	0.754
Diploma			0.86 (0.55,1.36)	0.532	0.86 (0.55,1.36)	0.545	0.85 (0.54,1.36)	0.514
College Education (ref.)			1.00		1.00		1.00
Father Education
Under high school diploma			1.73 (0.99,3.01)	0.052	1.79 (1.02,3.12)	0.040	1.78 (1.01,3.13)	0.044
Diploma			1.29 (0.82,2.04)	0.264	1.32 (0.84,2.10)	0.223	1.30 (0.819,2.07)	0.263
College Education (ref.)			1.00		1.00		1.00
Consulting service
Yes					1.26 (0.86,1.86)	0.228	1.30 (0.88,1.93)	0.179
No(ref.)					1.00		1.00
Consanguin eous marriage
No family relationship							1.56 (1.03,2.37)	0.035
family relationship(r ef.)							1.00
AIC	930.17		844.60		838.91		817.93

CIAS: Chen Internet Addiction Scale; AIC: Akaike's Information Criterion