Table 1.

Demographic characteristics of participants (N = 566).

Items	Category	Distribution	Percentage
Gender	Male	233	41.2
	Female	333	58.8
Age	18–20 years old	118	20.8
	21–23 years old	312	55.1
	24–26 years old	85	15.0
	27–29 years old	44	7.8
	30–32 years old	7	1.2
Educationa level	High school or below	24	4.2
	Undergraduate degree students 228 55.9	311	54.9
	Postgraduate degree	213	37.6
	Doctoral degree	18	3.2
WeChat using experience	<1 year	4	0.7
	1–2 years	11	1.9
	3–4 years	110	19.4
	Above 5 years	441	77.9
WeChat use per day	<1 h	47	8.3
	1–2 h	97	17.1
	3–4 h	158	27.9
	Above 5 h	264	46.6