Table 1.

Descriptive statistics for the sample (N = 8,261)

Adolescents		n	%	Parents		n	%
Age	10	869	10.5	Relationship with the focal child	Mother	4,049	49.0
M = 12.86	11	1,243	15.0		Father	4,212	51.0
SD = 1.75	12	1,532	18.5	Family annual income (yuan)	Below 1,000	29	0.4
	13	1,422	17.2		1,000–2,000	57	0.7
	14	1,401	17.0		2,000–5,000	499	6.0
	15	1,279	15.5		5,000–8,000	197	2.4
	16	515	6.2		8,000–10,000	299	3.6
Gender	Boys	4,725	57.2		10,000–30,000	632	7.7
	Girls	3,536	42.8		30,000–50,000	830	10.0
Grade	Fourth	1,205	14.6		50,000–100,000	2,776	33.6
	Fifth	1,612	19.5		Above 100,000	2,794	33.8
	Sixth	1,296	15.7	Educational level	Middle school or below	860	10.4
	Seventh	1,675	20.3		High school	2048	24.8
	Eighth	1,532	18.5		Junior college	2,832	34.3
	Ninth	941	11.4		Undergraduate	2,228	27.0
Living district	Municipality	143	1.7		Graduate or above	293	3.5
Location	Coastal province	2079	25.2	Age	≤30	1	0.0
	Middle province	3,704	44.8		31–35	1,485	18.0
	West province	2,335	28.3		36–40	3,536	42.8
Living district type	City	6,497	78.6		41–45	2,727	33.0
	Suburb	828	10.0		46–50	445	5.4
	County	936	11.3		51–60	63	0.8
					≥61	4	0.0