Table 2 Demographic characteristics of participants (N = 196)

Age in years

<  30

37

18.9%

30–34

54

27.6%

35–39

48

24.5%

≥ 40

57

29.1%

Mean (SD)

36.3 (7.9)

Sex

Males

187

95.4%

Females

9

4.6%

Department

Engineering

32

16.3%

Maintenance

34

17.4%

Metallurgy

34

17.4%

Mining

30

15.3%

Mineral Resources Management

33

16.8%

Others

33

16.8%

Education level

Primary

17

8.8%

Secondary

83

42.8%

Tertiary

94

48.5%

Working experience (years)

1–5

142

72.4%

>  5

54

27.6%

Mean (SD)

4.1 (2.0)

Work shifts in hours

  ≤ 9 h

33

16.8%

  > 9 h

163

83.2%

 Mean (SD)

11.2 (1.4)

Reported MSDs occurring in last 12 months

Reported MSD symptom

120

61.2%

Did not report any MSD

76

38.8%

Reported as work-related MSD

49

25.0%