Table 2 Sample characteristics of participants.

From: A multi-source physiological data-driven method for assessing the hazard perception level of operators

Characteristic

Category

Frequency

Percentage (%)

Gender

Male

15

65.2

Female

8

34.8

Age

20 ≤ Age < 30

5

21.7

30 ≤ Age < 40

11

47.8

40 ≤ Age < 50

7

30.4

Work experience

Experience < 1

2

8.7

1 ≤ Experience < 5

6

26.1

5 ≤ Experience < 10

8

34.8

Experience ≥ 10

7

30.4

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