Table 1 Occupational groups (reference group: service occupation as main occupation) and symptomatic knee osteoarthritis
Specific occupational groups a | 1 to 10 yrs. in specific occ. group | >10 yrs. in specific occ. group | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cases | % | Controls | % | Adj. OR b | 95% CI | Cases | % | Controls | % | Adj. OR b | 95% CI | |
Agricultural, animal husbandry, and forestry workers | 10 | 3.4 | 12 | 3.7 | 1.6 | 0.5-4.6 | 6 | 2.0 | 2 | 0.6 | 1.6 | 0.3-8.5 |
Chemical processers and manufacturers of plastics product | 6 | 2.0 | 7 | 2.1 | 0.9 | 0.2-3.4 | 12 | 4.1 | 5 | 1.5 | 1.8 | 0.5-6.5 |
Manufacturers of paper and paper products; printers | 1 | 0.3 | 3 | 0.9 | - | - | 10 | 3.4 | 5 | 1.5 | 1.7 | 0.5-5.6 |
Metal processers, blacksmiths | 11 | 3.7 | 1 | 0.3 | 14.6 | 1.5-142 | 10 | 3.4 | - | - | - | - |
Metal workers (machinery fitters, machine assemblers, mechanics, manufacturers of precision instruments; plumbers, welders, sheet metal and structural metal preparers and erectors) | 28 | 9.5 | 42 | 12.8 | 0.9 | 0.5-1.8 | 45 | 15.3 | 19 | 5.8 | 2.2 | 1.1-4.4 |
Electrical and electronics workers | 4 | 1.4 | 18 | 5.5 | 0.2 | 0.05-0.7 | 13 | 4.4 | 11 | 3.4 | 1.6 | 0.6-4.3 |
Tanners, fellmongers, pelt dressers; shoemakers and leather goods makers | 4 | 1.4 | 2 | 0.6 | 1.2 | 0.2-7.5 | 3 | 1.0 | 2 | 0.6 | 1.2 | 0.2-8.1 |
Food and beverage processors; tobacco product makers | 8 | 2.7 | 10 | 3.1 | 1.5 | 0.4-5.3 | 10 | 3.4 | 8 | 2.4 | 1.4 | 0.4-4.9 |
Construction workers (structural engineering, civil engineering) | 14 | 4.7 | 9 | 2.8 | 2.3 | 0.7-6.9 | 10 | 3.4 | 3 | 0.9 | 1.7 | 0.4-7.1 |
Plasterers, insulators, glaziers, terazzo workers, construction carpenters, roofers; upholsterers | 6 | 2.0 | 7 | 2.1 | 0.6 | 0.2-2.4 | 10 | 3.4 | 4 | 1.2 | 3.7 | 0.9-15.2 |
Woodworkers and plastic workers (carpenters, cabinet makers, wooden or plastic models makers, wood-frame construction) | 10 | 3.4 | 5 | 1.5 | 2.3 | 0.6-8.1 | 7 | 2.4 | 3 | 0.9 | 3.3 | 0.7-16.0 |
Painters; varnishers | 4 | 1.4 | 7 | 2.1 | 1.3 | 0.3-6.3 | 12 | 4.1 | 1 | 0.3 | 9.6 | 1.2-77.9 |
Quality inspectors; packers | 10 | 3.4 | 1 | 0.3 | 19.7 | 2.0-190 | 3 | 1.0 | 2 | 0.6 | 2.5 | 0.2-31.6 |
Labourers | 7 | 2.4 | 9 | 2.8 | 2.7 | 0.8-9.1 | - | - | - | - | - | - |
Operators (crane and earth-moving machinery operators etc.) | 2 | 0.7 | 3 | 0.9 | 0.4 | 0.04-3.5 | 1 | 0.3 | 2 | 0.6 | - | - |
Technicians (engineers, architects, chemists, physicists, electrical engineering technicians) | 11 | 3.7 | 24 | 7.3 | 0.7 | 0.3-1.7 | 41 | 13.9 | 32 | 9.8 | 1.3 | 0.7-2.4 |
Service workers: Storemen, nurses, refuse collectors | 16 | 5.4 | 19 | 5.8 | 1.3 | 0.6-3.0 | 16 | 5.4 | 8 | 2.4 | 3.2 | 1.1-9.1 |
Soldiers | 3 | 1.0 | 4 | 1.2 | 0.4 | 0.04-3.1 | 1 | 0.3 | 1 | 0.3 | - | - |
Other service workers | 1 | 0.3 | 5 | 1.5 | 0.5 | 0.1-5.8 | - | - | 1 | 0.3 | - | - |