Table 2.

Sociodemographic characteristics (n = 2449).

	Variables	N	Percent(%)
Gender	Male	823	33.6
	Female	1626	66.4
Age (years)	18–25	837	34.2
	26–30	463	18.9
	31–40	427	17.4
	41–50	486	19.8
	51–60	192	7.8
	≥61	44	1.8
Education level	Elementary or below	48	2.0
	Junior high school diploma	326	13.3
	Senior high school diploma	310	12.7
	Advanced diploma	728	29.7
	Baccalaureate degree	881	36.0
	Master's degree or above	156	6.4
Marital status	Non-married	1000	40.8
	Married	1353	55.3
	Divorced	77	3.1
	Widowed	19	0.8
Personal monthly income (RMB)	≤3000	845	34.5
	3001–5000	880	35.9
	5001–7000	365	14.9
	7001–10000	215	8.8
	≥10,001	144	5.9
Region	Urban	1783	72.8
	Township	394	16.1
	Rural	272	11.1
Province of residence	Chongqing Municipality	1408	57.5
	Sichuang Provinces	434	17.7
	Gansu Provinces	151	6.2
	Jiangxi Provinces	114	4.7
	Others	342	14.0
Occupation	Employed	1834	74.9
	Students	261	10.7
	Unemployed or ‘job-waiting’ individuals	268	10.9
	Retirees	86	3.5