Table 6. Association between mobile device use and emotional symptoms.

	Crude model				IPTW model
	OR	95% CI		p-value	OR	95% CI		p-value
Non-regular users	Ref.				Ref.
Regular users	1.54	1.06–2.24		.025	1.53	0.99–2.43		.057

Strengths and Difficulties Questionnaire–Emotional symptoms: normal/borderline: 0–4, abnormal: 5–10

IPTW = inverse probability of treatment weighted