Table 1. Participants' demographic data and SPANE scores (N = 21,322).

Variables		Frequency (%)	Mean (SD) of the SPANE score
			SPANE-P	SPANE-N	SPANE-B
Gender	Male	14314 (67.1%)	21.04 (4.67)	14.21 (4.86)	6.83 (8.21)
	Female	7008 (32.9%)	21.02 (4.56)	14.69 (4.79)	6.33 (8.11)
Age	18–25	3084 (14.5%)	21.18 (4.66)	14.29 (4.72)	6.89 (8.12)
	26–30	4165 (19.5%)	20.77 (4.58)	14.84 (4.72)	5.93 (8.09)
	31–35	4089 (19.2%)	20.71 (4.66)	14.62 (4.78)	6.09 (8.24)
	36–40	3557 (16.7%)	21.06 (4.62)	14.31 (4.87)	6.75 (8.15)
	41–45	2696 (12.6%)	21.31 (4.58)	13.88 (4.90)	7.43 (8.17)
	46–50	1720 (8.1%)	21.62 (4.74)	13.67 (4.99)	7.94 (8.25)
	51–55	1049 (4.9%)	21.20 (4.46)	14.26 (5.01)	6.94 (7.88)
	56–60	962 (4.5%)	20.96 (4.68)	14.42 (5.03)	6.54 (8.39)
Education level	Junior middle school and below	262 (1.2%)	21.15 (5.09)	13.84 (5.21)	7.31 (7.54)
	High school	2742 (12.9%)	20.69 (4.72)	14.56 (5.07)	6.14 (8.22)
	Junior College	7811 (36.6%)	20.90 (4.70)	14.44 (4.95)	6.45 (8.29)
	College	9486 (44.5%)	21.15 (4.54)	14.30 (4.69)	6.85 (8.08)
	Master and above	1021 (4.8%)	21.83 (4.49)	14.03 (4.66)	7.80 (8.19)
Personal income per month (RMB)	1001–2000	5202 (24.4%)	20.08 (4.87)	15.06 (4.99)	5.02 (8.38)
	2001–5000	11358 (53.3%)	21.14 (4.56)	14.28 (4.76)	6.86 (8.10)
	5001–10000	3734 (17.5%)	21.78 (4.35)	13.88 (4.71)	7.90 (7.85)
	10001–20000	736 (3.5%)	21.96 (4.39)	13.73 (5.03)	8.23 (7.96)
	More than 20000	292 (1.4%)	22.11 (4.26)	13.47 (4.92)	8.65 (7.87)
Marital status	Never married	5266 (24.7%)	20.91 (4.67)	14.62 (4.75)	6.29 (8.21)
	Married/With Spouses Separated	2378 (11.2%)	20.84 (4.65)	14.60(4.99)	6.24 (8.18)
	Married	13028 (61.1%)	21.17 (4.60)	14.20 (4.85)	6.98 (8.17)
	Divorced	394 (1.8%)	19.85 (4.40)	14.89 (4.70)	4.96 (7.37)
	Widow	41 (0.2%)	19.95 (5.06)	14.73 (4.57)	5.22 (7.34)
	Others	215 (1.0%)	19.97 (5.16)	15.02 (4.75)	4.95 (8.57)