Table 1.

Demographic information of participants (N = 641).

	Region					Total
	City A		City B
Gender
Male	111		91			202
Female	226		213			439
Total (%)	337 (52.6%)		304 (47.4%)
	Education
	Primary school	Junior high school	Senior high school	Undergraduate or above
Gender
Male	3	17	124	58		202
Female	1	61	273	104		439
Total (%)	4 (0.6%)	78 (12.2%)	387 (61.9%)	162 (25.3%)
	Daily social media use duration
	<0.5 h	0.5-1 h	1–2 h	2–4 h	> 4 h
Gender
Male	10	30	37	30	95	202
Female	23	71	80	75	190	439
Total (%)	33(5.1%)	101(15.8%)	117(18.2%)	105(16.4%)	285(44.5%)