Variables Mean (SD) Frequency(n) Percentages (%)
Work Experience 1-5 6-10 11-15 16-20
4.9 (3.00)
176 76 11 3 66.2 28.6 4.1 1.1
Working Hours <4 4-6 7-9 10-12
8.0 (4.3)
1 5 257 3 0.4 1.9 96.6 1.1
Duration of break time <10 minutes 10-15 minutes 20-25 minutes 30-35 minutes >35 minutes
14.0 (11.80)
100 25 89 50 3 37.6 9.4 33.5 18.8 0.8
Exposure to vibration Yes No 124 142 46.6 53.4
Work Training No Yes 231 35 86.8 13.2
High temperature workplace Yes No 251 15 94.4 5.6
Repetitive work Yes No 264 2 99.2 0.8
Awkward posture Yes No 235 31 88.3 11.7
High job demands Yes No 262 4 98.5 1.5
Working with injury Yes No 254 12 95.5 4.5
Use of PPE Yes No 7 259 2.6 97.4
Poor work design Yes No 231 34 87.2 12.8