Table 1 Characteristics of the participants

Total

9.3 ± 1.8

34.8 ± 3.3

30.6 ± 6.7

Age (years)

< 0.001

0.160

< 0.001

  < 30

229

22.2

8.8 ± 2.1

34.4 ± 3.3

29.0 ± 7.9

  31–40

415

40.2

9.5 ± 1.6

34.9 ± 3.3

30.3 ± 6.4

  ≥ 40

388

37.6

9.4 ± 1.8

34.9 ± 3.2

31.8 ± 6.1

Gender

0.219

0.243

0.268

  Male

528

51.2

9.4 ± 1.9

34.6 ± 3.3

30.8 ± 6.6

  Female

504

48.8

9.2 ± 1.7

34.9 ± 3.2

30.3 ± 6.9

Education

< 0.001

0.651

0.247

  Bachelor’s degree and below

669

64.8

9.2 ± 1.8

34.8 ± 3.2

30.8 ± 6.7

  Master’s degree and Above

363

35.2

9.6 ± 1.7

34.7 ± 3.4

30.3 ± 6.8

Professional title

< 0.001

0.018

< 0.001

  Non-title

86

8.3

8.2 ± 2.6

33.8 ± 3.5

29.7 ± 8.3

  Primary title

185

17.9

9.0 ± 1.7

34.7 ± 3.2

29.1 ± 7.4

  Middle title

374

36.2

9.3 ± 1.7

34.7 ± 3.2

30.1 ± 6.6

  Senior title

387

37.5

9.7 ± 1.7

35.0 ± 3.2

31.9 ± 5.9

Years of anesthetic practice after obtaining board certification

< 0.001

0.185

< 0.001

  ≤ 5

218

21.1

8.8 ± 2.0

34.4 ± 3.4

28.8 ± 7.9

  5–10

200

19.4

9.5 ± 1.6

35.0 ± 3.1

29.7 ± 6.8

  11–15

200

19.4

9.4 ± 1.7

34.7 ± 3.4

30.6 ± 5.9

  ≥ 16

414

40.1

9.5 ± 1.8

34.9 ± 3.2

31.9 ± 6.1

Hospital grade

< 0.001

0.611

0.552

  Tertiary

749

72.6

9.4 ± 1.8

34.8 ± 3.3

30.5 ± 6.8

  Non-tertiary

283

27.4

9.0 ± 1.9

34.7 ± 3.1

30.8 ± 6.4