Table 1 Occupational groups (reference group: service occupation as main occupation) and symptomatic knee osteoarthritis
Specific occupational groupsa | 1 to 10 yrs. in specific occ. group | >10 yrs. in specific occ. group | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cases | % | Controls | % | Adj. ORb | 95% CI | Cases | % | Controls | % | Adj. ORb | 95% CI | |
Agriculture and mining | ||||||||||||
Agricultural, animal husbandry, and forestry workers | 8 | 2.7 | 14 | 4.3 | 1.1 | 0.4–3.4 | 5 | 1.7 | 3 | 0.9 | 2.0 | 0.4–13.0 |
Production | ||||||||||||
Chemical processers and manufacturers of plastics product | 6 | 2.0 | 7 | 2.1 | 0.9 | 0.2–4.4 | 14 | 4.7 | 3 | 0.9 | 16.1 | 3.1–84.8 |
Manufacturers of paper and paper products; printers | 2 | 0.7 | 2 | 0.6 | - | - | 10 | 3.4 | 5 | 1.5 | 2.5 | 0.7–9.1 |
Metal processers, blacksmiths | 10 | 3.4 | 2 | 0.6 | 6.2 | 1.2–31.4 | 8 | 2.7 | 2 | 0.6 | 5.1 | 0.7–35.4 |
Metal workers (machinery fitters, machine assemblers, mechanics, manufacturers of precision instruments; plumbers, welders, sheet metal and structural metal preparers and erectors) | 29 | 9.8 | 41 | 12.5 | 1.0 | 0.5–2.0 | 39 | 13.2 | 25 | 7.6 | 3.0 | 1.5–6.2 |
Electrical and electronics workers | 5 | 1.7 | 17 | 5.2 | 0.2 | 0.1–0.8 | 10 | 3.4 | 14 | 4.3 | 1.2 | 0.4–3.1 |
Tanners, fellmongers, pelt dressers; shoemakers and leather goods makers | 5 | 1.7 | 1 | 0.3 | 5.2 | 0.5–49.0 | 2 | 0.7 | 3 | 0.9 | 0.8 | 0.1–5.4 |
Food and beverage processors; tobacco product makers | 10 | 3.4 | 8 | 2.4 | 1.5 | 0.5–4.9 | 8 | 2.7 | 10 | 3.1 | 0.9 | 0.2–3.4 |
Construction workers (structural engineering, civil engineering) | 14 | 4.7 | 9 | 2.8 | 2.6 | 0.9–7.5 | 9 | 3.1 | 4 | 1.2 | 2.1 | 0.5–8.7 |
Plasterers, insulators, glaziers, terazzo workers, construction carpenters, roofers; upholsterers | 5 | 1.7 | 8 | 2.4 | 0.5 | 0.1–2.1 | 9 | 3.1 | 5 | 1.5 | 4.5 | 1.1–19.4 |
Woodworkers and plastic workers (carpenters, cabinet makers, wooden or plastic models makers, wood-frame construction) | 8 | 2.7 | 7 | 2.1 | 1.8 | 0.5–6.5 | 7 | 2.4 | 3 | 0.9 | 5.7 | 1.2–28.0 |
Painters; varnishers | 4 | 1.4 | 7 | 2.1 | 0.7 | 0.2–2.9 | 9 | 3.1 | 4 | 1.2 | 6.4 | 1.5–27.1 |
Quality inspectors; packers | 8 | 2.7 | 3 | 0.9 | 7.3 | 1.3–41.4 | 3 | 1.0 | 2 | 0.6 | 1.3 | 0.1–12.8 |
Labourers | 5 | 1.7 | 11 | 3.4 | 0.8 | 0.2–3.1 | - | - | - | - | - | - |
Operators (crane and earth-moving machinery operators etc.) | 3 | 1.0 | 2 | 0.6 | 1.5 | 0.2–13.7 | 2 | 0.7 | 1 | 0.3 | - | - |
Technology | ||||||||||||
Technicians (engineers, architects, chemists, physicists, electrical engineering technicians) | 15 | 5.1 | 21 | 6.4 | 1.0 | 0.4–2.3 | 42 | 14.2 | 31 | 9.5 | 1.8 | 0.9–3.3 |
Services | ||||||||||||
Service workers: Storemen, nurses, refuse collectors | 15 | 5.1 | 20 | 6.1 | 1.2 | 0.5–2.9 | 17 | 5.8 | 8 | 2.4 | 4.3 | 1.6–11.7 |
Soldiers | 3 | 1.0 | 4 | 1.2 | 1.5 | 0.2–11.2 | 1 | 0.3 | 1 | 0.3 | - | - |
Other service workers | 1 | 0.3 | 6 | 1.8 | 0.2 | 0.02–1.9 | - | - | 1 | 0.3 | - | - |