Table 2 Multivariable analysis of lower back MSDs
Factors | Lower back | |
|---|---|---|
P | OR (95% C.I.) | |
Age | 0.024 | 2.109 (1.064–4.179) |
Sex (1 = famale, 0 = male) | < 0.001 | 2.264 (1.015–5.046) |
Work hours per week | < 0.001 | 2.654 (1.181–5.962) |
Break times during workday | ||
 No rest | Reference | |
 Once or twice | 0.017 | 0.494 (0.253–0.963) |
 Over twice | < 0.001 | 0.318 (0.159–0.635) |
Bending the trunk frequently | < 0.001 | 3.414 (1.842–6.331) |
Heavy or awkward lifting | < 0.001 | 4.158 (1.645–10.507) |
Bending or twisting the neck | < 0.001 | 2.208 (1.065–4.577) |
Mental stress | ||
 Low | Reference | |
 Medium | 0.089 | 1.966 (0.875–4.417) |
 High | < 0.001 | 2.654 (1.205–5.847) |
Psychological fatigue | ||
 Low | Reference | |
 Medium | 0.037 | 3.146 (1.027–9.633) |
 High | < 0.001 | 6.178 (2.173–17.561) |
Employment status (1 = temporary/contract, 0 = permanent) | < 0.001 | 3.428 (1.618–7.262) |