Table 1.

Demographic characteristics of the students in the study (N = 2469)

Variables		Frequency (%)
Gender
	Male	684 (27.7%)
	Female	1785 (72.3%)
Family status
	Only-child family	819 (33.17%)
	Not only-child family	1650 (66.83%)
Parents’ marital status
	Completed families	1936 (78.41%)
	Unmarried	529 (21.43%)
	Others	4 (0.16%)
Monthly family income per person
	< 1000 yuan	825 (33.41%)
	1000–1449 yuan	467 (18.91%)
	≥ 1500 yuan	1177 (47.68%)
The prevalence of childhood trauma
	Emotional abuse	128 (5.18%)
	Physical abuse	229 (9.28%)
	Sexual abuse	237 (9.60%)
	Emotional neglect	341 (13.81%)
	Physical neglect	495 (20.05%)

Note: “Unmarried” includes divorced and widowed, “Other” includes missing data