Table 4. Odds ratio (95% CI) for smartphone addiction by domestic violence and parental addiction (“high” vs “not high” Self-control).

	“high” Self-control a		“not high” Self-control a
	Odds ratio (95% CI)		Odds ratio (95% CI)
Domestic violence
Yes	0.95	(0.30–3.01)	2.87	(1.68–4.90)
No	Reference		Reference
Parental addiction
Yes	1.79	(0.77–4.17)	1.95	(1.34–2.83)
No	Reference		Reference

^aAdjusted by school age, sex, income, residence family structure, parents’ economic activity, academic achievement, preventive education for smartphone addiction education.