Table 1.

General information of nurses (n = 314)

project	classification	Number of cases (Composition ratio)
Gender
	male	19 (6.1%)
	female	295 (93.9%)
Age
	22–30	107 (34.1%)
	31–40	179 (57.0%)
	41–53	28 (8.9%)
Department
	internal medicine	124 (39.5%)
	Surgery	107 (34.1%)
	ICU and operating room	69 (22.0%)
	Other ①	14 (4.5%)
Years of Work
	1–10 years	185 (58.9%)
	11–20 years	104 (33.1%)
	21–37 years	25 (8.0%)
title
	Nurse	32 (10.2%)
	Senior nurse	186 (59.2%)
	Supervisor nurse or above ②	96 (30.6%)
education
	specialty	22 (7.0%)
	undergraduate	276 (87.9%)
	graduate student	16 (5.1%)
marital status
	unmarried	75 (23.9%)
	married	234 (74.5%)
	divorce	5 (1.6%)
Average monthly income (yuan)
	<5000	119 (37.9%)
	5001–10,000	174 (55.4%)
	> 10,001	21 (6.7%)
Night shift frequency
(Monthly)	0 times	72 (22.9%)
	1–5 times	138 (43.9%)
	6–10 times	91 (29.0%)
	11–15 times	13 (4.1%)
Personnel Relations
	Contract system or personnel agency	253 (80.6%)
	Officially under preparation	61 (19.4%)

① Other departments include Pediatric Radiology Interventional Department and Rehabilitation Department; ② The supervisor nurse or above includes 8 deputy chief nurses and 2 chief nurses