Table 1.

General demographic data

Variables	Categories	The first round of investigation (n = 236)			The second round of investigation (n = 494)
		N	%	M ± SD	N	%	M ± SD
Gender	Male	22	9.3		33	6.7
	Female	214	90.7		461	93.3
Age (year)	20 ~ 30	167	70.8	28.82 ± 5.80	279	56.5	31.47 ± 6.89
	31 ~ 40	60	25.4		173	35.0
	41 ~ 50	5	2.1		29	5.9
	> 50	4	1.7		13	2.6
Marital status	Unmarried	119	50.4		168	34.0
	Married	113	47.9		314	63.6
	Others	4	1.7		12	2.4
Education level	3-year college	32	13.6		51	10.3
	4-year university	190	80.5		418	84.6
	Master’s or higher	14	5.9		25	5.1
Work experience (years)	1 ~ 5	139	58.9	6.56 ± 6.14	178	36.0	9.89 ± 7.71
	6 ~ 10	53	22.5		84	17.0
	> 10	44	18.6		232	47.0
Title	Nurse	199	84.3		382	77.3
	Nurse in charge	26	11		83	16.8
	Deputy chief nurse or above	11	4.7		29	5.9
Salary (RMB)	< 4000	35	14.8		44	8.9
	4001 ~ 6000	58	24.6		64	13.0
	6001 ~ 8000	71	30.1		123	24.9
	8001 ~ 10,000	47	19.9		128	25.9
	> 10,000	25	10.6		135	27.3
Department	Internal medicine ward	81	34.3		160	32.4
	Surgical ward	41	17.4		62	12.6
	Maternity ward	17	7.2		24	4.9
	Pediatric ward	10	4.2		16	3.2
	Emergency room	12	5.1		12	2.4
	ICU	17	7.2		41	8.3
	Operating room	15	6.4		17	3.4
	Oncology department	2	0.8		3	0.6
	psychiatry department	1	0.4		1	0.2
	Outpatient department	11	4.7		122	24.7
	Others	29	12.3		36	7.3