Variable | Cases | Controls | ||||||
---|---|---|---|---|---|---|---|---|
N | % | N | % | Adj. ORa | 95% CI | Adj. ORb | 95% CI | |
Kneeling and squatting combined | ||||||||
No kneeling/squatting | 145 | 49.2 | 208 | 63.6 | 1.0 | - | 1.0 | - |
>0 – <870 h | 15 | 5.1 | 39 | 11.9 | 0.7 | 0.3–1.5 | 0.5 | 0.2–1.2 |
870 – <4,757 h | 32 | 10.8 | 40 | 12.2 | 1.4 | 0.8–2.5 | 0.8 | 0.4–1.5 |
4,757 – <10,800 h | 40 | 13.6 | 22 | 6.7 | 2.8 | 1.5–5.4 | 1.6 | 0.8–3.4 |
> = 10.800 h | 62 | 21.0 | 17 | 5.2 | 4.0 | 2.1–7.6 | 2.4 | 1.1–5.0 |
Cumulated lifting and carrying combined (kg*hrs.) | ||||||||
No lifting/carrying | 75 | 25.4 | 153 | 46.8 | 1.0 | - | 1.0 | - |
>0 – <630 kg*hrs. | 28 | 9.5 | 58 | 17.7 | 1.3 | 0.7–2.4 | 1.2 | 0.6–2.3 |
630 – <5,120 kg*hrs. | 61 | 20.7 | 58 | 17.7 | 2.0 | 1.2–3.4 | 2.0 | 1.1–3.6 |
5,120 – <37,000 kg*hrs. | 92 | 31.2 | 40 | 12.2 | 3.6 | 2.1–6.0 | 2.0 | 1.1–3.9 |
> = 37,000 kg*hrs. | 35 | 11.9 | 17 | 5.2 | 3.5 | 1.7–7.2 | 2.6 | 1.1–6.1 |
Kneeling/squatting and lifting/carrying combinedc | ||||||||
Both no kneeling/squatting and no lifting/carrying | 65 | 22.0 | 137 | 41.9 | 1.0 | - | 1.0 | - |
Kneeling/squatting >0 – <870 hrs. or lifting/carrying >0 – <630 kg*hrs. | 26 | 8.8 | 58 | 17.7 | 1.2 | 0.7–2.3 | 1.1 | 0.5–2.1 |
Kneeling/squatting 870 – <4,757 hrs. or lifting/carrying >0 – <5,120 kg*hrs. | 42 | 14.2 | 59 | 18.0 | 1.3 | 0.8–2.4 | 1.2 | 0.7–2.2 |
Kneeling/squatting 4,757 – <10,800 hrs. or lifting/carrying 5,120 – <37,000 kg*hrs. | 78 | 26.4 | 42 | 12.8 | 3.5 | 2.0–6.0 | 2.7 | 1.5–4.8 |
Either kneeling/squatting >10,800 hrs. or lifting/carrying >37,000 kg*hrs.d | 69 | 23.4 | 26 | 8.0 | 3.8 | 2.1–6.8 | 3.4 | 1.8–6.3 |
Both kneeling/squatting >10,800 hrs. and lifting/carrying >37,000 kg*hrs. | 14 | 4.7 | 4 | 1.2 | 7.8 | 2.1–28.3 | 7.9 | 2.0–31.5 |