Table 1 Demographics and earthquake-related experiences among rescuers of the Ludian earthquake, China

Total

349

-

49.86 (6.01)

-

35.85 (6.90)

-

Military medical rescuer

0.002

<0.001

No

241

69.05

49.2 (6.25)

34.63 (6.66)

Yes

108

30.95

51.32 (5.16)

38.58 (6.67)

Age

0.039

<0.001

<30

102

29.23

51.08 (5.09)

34.48 (6.23)

30–40

158

45.27

49.72 (6.60)

35.52 (7.48)

>40

89

25.50

48.70 (5.68)

38.02 (6.08)

Marriage

0.089

0.332

No

115

32.95

50.75 (5.56)

35.38 (6.31)

Yes

234

67.05

49.42 (6.18)

36.08 (7.18)

Gender

0.347

<0.001

Male

151

43.27

49.38 (6.61)

37.72 (7.25)

Female

198

56.73

50.22 (5.49)

34.43 (6.28)

Ethnicity

0.028

0.176

Minority

79

22.64

48.87 (5.56)

35.04 (6.91)

Han

270

77.36

50.15 (6.11)

36.09 (6.89)

Education level

0.056

<0.001

Graduate

35

10.03

50.47 (7.18)

39.03 (7.44)

Undergraduate

124

35.53

49.59 (6.21)

36.65 (6.77)

College

97

27.79

48.96 (6.36)

36.25 (7.31)

Other

93

26.65

50.93 (4.62)

33.18 (5.54)

Occupation

0.278

0.411

Doctor

125

35.82

49.82 (5.77)

36.05 (6.88)

Nurse

156

44.70

50.55 (5.22)

35.47 (7.18)

Other

68

19.48

48.33 (7.70)

36.37 (6.29)

Professional titles

0.013

0.460

No

40

11.46

50.43 (6.35)

34.19 (6.42)

Junior

173

49.57

50.71 (5.44)

36.04 (6.98)

Intermediate

121

34.67

48.53 (6.29)

36.21 (7.13)

Senior

15

4.3

49.13 (7.52)

35.3 (4.92)

Trapped/in danger

0.339

0.095

No

271

77.65

50.18 (5.51)

36.21 (6.79)

Yes

78

22.35

48.72 (7.41)

34.63 (7.17)

Rescue training

0.685

0.188

No

44

12.61

49.67 (5.91)

36.94 (6.89)

Yes

305

87.39

49.88 (6.03)

35.7 (6.9)

Involved in previous rescue

0.798

<0.001

No

105

30.09

50.04 (5.38)

37.58 (7.25)

Yes

244

69.91

49.78 (6.27)

35.11 (6.62)