Table 1.

Basic demographic characteristics of health workers enrolled in the study.

Characteristics	Frontline	Second-line	Total	P-value
	(n = 325)	(n = 406)	(n = 731)
Gender				<0.001
Male	167 (51.4)	136 (33.5)	303 (41.5)
Female	158 (48.6)	270 (66.5)	428 (58.5)
Age, years				<0.001
≤ 25	13 (4.0)	36 (8.9)	49 (6.7)
26–45	271 (83.4)	346 (85.2)	617 (84.4)
>45	41 (12.6)	24 (5.9)	65 (8.9)
Occupation				<0.001
Doctor	194 (59.7)	189 (46.6)	383 (52.4)
Nurse	131 (40.3)	217 (53.4)	348 (47.6)
Education				<0.001
≤ Undergraduate	234 (72.0)	338 (83.2)	572 (78.2)
≥Postgraduate	91 (28.0)	68 (16.8)	159 (21.8)
ICU work time, years				<0.001
≤ 5	47 (14.5)	114 (28.1)	161 (22.0)
>5	278 (85.5)	292 (71.9)	570 (78.0)
Hospital level				0.08
Teaching hospital	135 (41.5)	143 (35.2)	278 (38.0)
Non-teaching hospital	190 (58.5)	263 (64.8)	453 (62.0)
Marriage				0.31
Married	266 (81.8)	320 (78.8)	586 (80.2)
Unmarried or divorce	59 (18.2)	86 (21.2)	145 (19.8)
Children need support				0.12
0	80 (24.6)	121 (29.8)	201 (27.5)
≥1	245 (75.4)	285 (70.2)	530 (72.5)
Elderlys need support				0.76
≤ 2	139 (42.8)	169 (41.6)	308 (42.1)
≥3	186 (57.2)	237 (58.4)	423 (57.9)
Vacation, days				0.001
0	111 (34.2)	186 (45.8)	297 (40.6)
1–6	118 (36.3)	102 (25.1)	220 (30.1)
≥7	96 (29.5)	118 (29.1)	214 (29.3)
Night duty number				0.41
≤ 3	75 (23.1)	101 (24.9)	176 (24.1)
4–9	85 (26.1)	89 (21.9)	174 (23.8)
≥10	165 (50.8)	216 (53.2)	381 (52.1)
Labor				0.76
Unchanged	119 (36.6)	157 (38.6)	276 (37.8)
Increased	12 (3.7)	12 (3.0)	24 (3.3)
Reduced	194 (59.7)	237 (58.4)	431 (58.9)
Income				<0.001
Unchanged	98 (25.4)	129 (31.8)	227 (31.0)
Increased	49 (37.3)	6 (1.5)	55 (7.5)
Reduced	178 (37.3)	271 (66.7)	449 (61.5)

Data were expressed as no. %.