| Factor | Variable | WRMSDs (+) | Adjusted odds ratio (95% CI) | Crude odds ratio (95% CI) | p-value | |
| Working hours per day | 8 hours | 79.3 (172) | 1.04 (0.49 - 2.06) | 1.47 (0.77 - 2.78) | 0.991 | |
| 9 hours and 10 hours | 86.5 (212) | 0.78 (0.38 - 1.60) | 0.87 (0.45 - 1.69) | 0.510 | ||
| Above 10 hours | 84.8 (84) | 1 | 1 |
| ||
| Number of work shifts | One | 91.2 (31) | 0.29 (0.07 - 1.22) | 0.33 (0.09 - 1.25) | 0.091 | |
| Two | 82.5 (203) | 0.60 (0.28 - 1.29) | 0.72 (0.36 - 1.44) | 0.192 | ||
| Three | 84.8 (190) | 0.58 (0.27 - 1.26) | 0.61 (0.30 - 1.24) | 0.170 | ||
| Above 3 | 77.2 (44) | 1 | 1 |
| ||
| Working on the same position | NO | 72.4 (160) | 2.90 (1.74 - 4.83) | 3.67 (2.30 - 5.86) | 0.001 | |
| YES | 90.6 (308) | 1 | 1 |
| ||
| Standing for long | NO | 78.4 (192) | 1.28 (0.76 - 2.17) | 1.91 (1.21 - 2.99) | 0.345 | |
| YES | 87.3 (276) | 1 | 1 |
| ||
| Sitting for long | NO | 82.0 (310) | 0.99 (0.57 - 1.74) | 1.39 (0.84 - 2.28) | 0.978 | |
| YES | 86.3 (158) | 1 | 1 |
| ||
| Repetitive task | NO | 71.0 (66) | 1.55 (0.84 - 2.87) | 2.49 (1.48 - 4.18) | 0.160 | |
| YES | 85.9 (402) | 1 | 1 |
| ||
| Working with vibrating objects | NO | 80.2 (287) | 1.94 (1.10 - 3.40) | 2.04 (1.22 - 3.40) | 0.022 | |
| YES | 89.2 (181) | 1 | 1 |
| ||
| Job stressfulness | NO | 75.9 (192) | 1.91 (1.14 - 3.20) | 2.74 (1.72 - 4.37) | 0.014 | |
| YES | 89.6 (276) | 1 | 1 |
| ||
| Stretching exercises after work | NO | 81.8 (293) | 1.24 (0.73 - 2.11) | 1.39 (0.86 - 2.24) | 0.434 | |
| YES | 86.2 (175) | 1 | 1 |
| ||
| Ergonomic postures | NO | 83.0 (289) | 0.78 (0.46 - 1.32) | 1.09 (0.68 - 1.70) | 0.356 | |
| YES | 84.0 (178) | 1 | 1 |
| ||
| Help with task | NO | 74.8 (101) | 1.44 (0.76 - 2.72) | 1.75 (0.99 - 3.08) | 0.261 | |
| SOMETIMES | 87.6 (227) | 0.77 (0.43 - 1.40) | 0.73 (0.42 - 1.27) | 0.395 | ||
| QUITE OFTEN | 83.8 (140) | 1 | 1 |
| ||
| Physical efforts | NO | 80.2 (207) | 1.06 (0.63 - 1.780) | 1.53 (0.98 - 2.39) | 0.817 | |
| YES | 86.1 (261) | 1 | 1 |
| ||