Category | Duration of exposure | Manually handled weights | Frequency per shift | Percentage of participants in the corresponding category | Mean percentile of exposure | Risk estimate (OR) |
---|---|---|---|---|---|---|
1 | 0 yrs. | > 20 kg | ≥ 10× | 53.6%b | 27th | 1.0 - |
2 | 1–12 yrs.a | > 20 kg | ≥ 10× | 16.1%b | 62nd | 1.1 (95% CI 0.4–3.2) |
3 | 13–24 yrs.a | > 20 kg | ≥ 10× | 12.7%b | 76th | 2.2 (95% CI 0.8–5.9) |
4 | > 24 yrs.a | > 20 kg | ≥ 10× | 17.6%b | 91st | 2.3 (95% CI 1.2–4.3) |