Table 1 Socio-demographic characteristics of respondents (n = 1898)

Sex

<0.001^a

 Male

115

6.1

59.10 ± 19.22

 Female

1783

93.9

67.96 ± 16.93

Age, years

<0.001^b

  ≤ 30

621

32.7

64.85 ± 17.60

 31–50

1204

63.4

68.96 ± 16.72

 >50

73

3.8

64.11 ± 18.81

Marital status

<0.001^a

 Single/divorced/widowed/separated

377

19.9

63.40 ± 18.15

 Married

1521

80.1

68.43 ± 16.82

Educational background

0.041^c

 College diploma or below

137

7.2

63.26 ± 19.67

 Bachelor

1671

88.0

67.86 ± 16.75

 Master or higher

90

4.7

65.79 ± 20.44

Monthly income, CNY

<0.001^a

 <5000

334

17.6

63.52 ± 17.57

  ≥ 5000

1564

82.4

68.26 ± 17.02

Number of child/children

<0.001^c

 0

466

24.6

64.75 ± 17.58

 1

907

47.8

68.59 ± 16.69

  ≥ 2

525

27.7

67.80 ± 17.52

Department

<0.001^c

 Internal medicine

538

28.3

67.18 ± 18.04

 Surgery

742

39.0

69.05 ± 16.18

 Obstetrics and gynecology

95

5.0

67.44 ± 16.52

 Pediatrics

138

7.2

69.79 ± 15.18

 Emergency department

165

8.6

66.64 ± 15.69

 Other

220

11.5

61.65 ± 19.71

Professional status

<0.001^c

 Primary

898

47.3

65.85 ± 17.38

 Intermediate

920

48.5

69.05 ± 16.88

 Senior

80

4.2

66.53 ± 17.46

Employment status

0.771^a

 Regular employee

410

21.6

67.21 ± 18.83

 Contract employee

1488

78.4

67.49 ± 16.73

Length of vacation days

0.001^c

 0

209

11.0

70.22 ± 16.22

 1–14

1129

59.5

67.76 ± 17.07

  ≥ 15

560

29.5

65.71 ± 17.68

Experience of workplace violence

<0.001^a

 Yes

1648

86.8

68.56 ± 16.20

 No

250

13.2

59.92 ± 21.30

Social support

0.043^a

 Low

1308

68.9

68.00 ± 16.22

 High

590

31.1

66.16 ± 19.16