OR* of first-time surgery for SIS in relation to occupational biomechanical exposures
| Exposure | Surgery for SIS (n) | ORcrude | 95% CI | ORadj† | 95% CI |
|---|---|---|---|---|---|
| Arm-elevation-years | |||||
| 0 | 3294 | 1.0 | – | 1.0 | – |
| >0–2 | 3359 | 1.3 | 1.3 to 1.4 | 1.4 | 1.4 to 1.5 |
| >2–5 | 2197 | 1.4 | 1.3 to 1.5 | 1.5 | 1.5 to 1.6 |
| >5–10 | 2147 | 1.7 | 1.6 to 1.8 | 1.8 | 1.7 to 1.9 |
| >10–56 | 3121 | 1.9 | 1.8 to 2.0 | 2.1 | 2.0 to 2.2 |
| p for trend <10−3 | p for trend <10−3 | ||||
| Repetition-years | |||||
| 0 | 6001 | 1.0 | – | 1.0 | – |
| >0–1 | 1872 | 1.0 | 1.0 to 1.1 | 1.2 | 1.1 to 1.3 |
| >1–2 | 1423 | 1.4 | 1.3 to 1.5 | 1.5 | 1.5 to 1.6 |
| >2–10 | 2357 | 1.5 | 1.4 to 1.5 | 1.6 | 1.5 to 1.6 |
| >10–68 | 2465 | 1.9 | 1.8 to 2.0 | 1.9 | 1.8 to 2.0 |
| p for trend <10−3 | p for trend <10−3 | ||||
| Force-years | |||||
| <5 | 2982 | 1.0 | – | 1.0 | – |
| 5 | 1643 | 0.8 | 0.8 to 0.9 | 0.7 | 0.6 to 0.7 |
| >5–7.5 | 3770 | 1.3 | 1.2 to 1.3 | 1.2 | 1.1 to 1.2 |
| >7.5–10 | 2933 | 1.7 | 1.6 to 1.8 | 1.5 | 1.4 to 1.6 |
| >10–20 | 2790 | 1.9 | 1.8 to 2.0 | 1.7 | 1.6 to 1.8 |
| p for trend <10−3 | p for trend <10−3 | ||||
| HAV-years | |||||
| 0 | 8064 | 1.0 | – | 1.0 | – |
| >0–5 | 3937 | 1.1 | 1.0 to 1.2 | 1.3 | 1.2 to 1.3 |
| >5–58 | 2117 | 1.5 | 1.4 to 1.5 | 1.5 | 1.5 to 1.6 |
| p for trend <10−3 | p for trend <10−3 | ||||
| Shoulder-load-years | |||||
| 0 | 5893 | 1.0 | – | 1.0 | – |
| >0–5 | 1794 | 1.2 | 1.2 to 1.3 | 1.4 | 1.3 to 1.5 |
| >5–10 | 3745 | 1.7 | 1.6 to 1.8 | 1.7 | 1.6 to 1.7 |
| >10–15 | 920 | 1.7 | 1.6 to 1.8 | 1.8 | 1.7 to 2.0 |
| >15–20 | 1766 | 1.9 | 1.8 to 2.0 | 2.0 | 1.9 to 2.1 |
| p for trend <10−3 | p for trend <10−3 | ||||
*The OR can be interpreted as a HR.35
†Adjusted for time varying age (five age categories), sex, region of residence (five regions) and calendar year at start of follow-up. We did not mutually adjust for other exposure variables due to expected colinearity.18
HAV, hand-arm-vibration; SIS, subacromial impingement syndrome.