Table 7. Association between mobile device use and peer problems.

	Crude model				IPTW model
	OR	95% CI		p-value	OR	95% CI		p-value
Non-regular users	Ref.				Ref.
Regular users	1.46	0.93–2.28		.103	1.24	0.71–2.17		.452

Strengths and Difficulties Questionnaire–Peer problems: normal/borderline: 0–4, abnormal: 5–10

IPTW = inverse probability of treatment weighted