Table 2.
Characteristics of dumper operators.
| Variable | Response | Mean ± SD or n (%) | |
|---|---|---|---|
| Personal factors | Age | 38.47 ± 7.65 | |
| Height | 1.71 ± 0.066 | ||
| Weight | 76.5 ± 10.13 | ||
| BMI | 25.9 ± 3.06 | ||
| Experience in mines | 21.62 ± 6.32 | ||
| Number of childrens | 1.06 ± 0.3 | ||
| Education | No formal education | 10 (4) | |
| Primary education | 101 (40.3) | ||
| Secondary education | 101 (40.3) | ||
| Tertiary education | 36 (14.5) | ||
| Marriage status | Single | 48 (19.5) | |
| Married | 192 (78) | ||
| Divorced | 6 (2.4) | ||
| Habitual factors | Medicine | Yes | 72 (29.3) |
| No | 194 (70.7) | ||
| Smoking cigarette | No | 206 (83.7) | |
| Yes | 40 (16.3) | ||
| Alcohol consumption | No | 172 (69.9) | |
| Yes | 74 (30.1) | ||
| Work-related factors | Job demand | No | 176 (71.5) |
| Yes | 70 (28.5) | ||
| Work design | No | 220 (89.4) | |
| Yes | 26 (10.6) | ||
| Repetitive work | No | 172 (69.4) | |
| Yes | 74 (29.8) | ||
| Awkward posture | No | 224 (90.3) | |
| Yes | 22 (8.9) |