Table 3
Prevalence rate ratio of observed (O) to expected (E) number of cases of osteoarthritis by occupational category and sex
| Occupation (code number in French classification) | Men* | Women* | ||||
|---|---|---|---|---|---|---|
| O | O/E | 95% CI | O | O/E | 95% CI | |
| Bold figures correspond to statistically significant excess OA compared with what was expected. | ||||||
| *All blue collar workers, including categories 67 and 68. | ||||||
| O, actual number of patients observed in each category; O/E: prevalence rate ratio (observed over expected) adjusted for age. Expected numbers obtained from the distribution of the French workforce by occupational categories in the National Survey on Health Impairment and Disability of 1998 in France. | ||||||
| Cleaners: commercial and industrial (68) | 3 | 0.1 | 0.0 to 0.1 | 52 | 6.2 | 4.6 to 8.0 |
| Self-employed in construction, mechanics, clothing, and food sectors (21) | 280 | 2.9 | 2.6 to 3.3 | 67 | 5.0 | 3.9 to 6.3 |
| Salaried workers in construction, mechanics, clothing, and food sectors (63) | 245 | 1.9 | 1.7 to 2.2 | 60 | 3.2 | 2.5 to 4.1 |
| Agriculture (10) | 250 | 2.8 | 2.5 to 3.2 | 126 | 2.7 | 2.3 to 3.2 |
| Teachers, physical educators, professional sportsmen (42) | 29 | 2.5 | 1.7 to 3.5 | 46 | 0.9 | 0.7 to 1.2 |
| Retail commerce and small service businesses (22) | 50 | 0.7 | 0.5 to 0.9 | 80 | 1.9 | 1.5 to 2.3 |
| Public services engineers (33) | 21 | 1.8 | 1.1 to 2.6 | 2 | 0.1 | 0.01 to 0.3 |
| Public services assistants (teaching and health) (52) | 77 | 1.5 | 1.2 to 1.8 | 228 | 1.6 | 1.4 to 1.8 |
| Liberal professions (health and others) (31) | 36 | 1.6 | 1.1 to 2.2 | 13 | 1.2 | 0.6 to 2.0 |
| Blue collar workers unspecified (101)† | 167 | 1.3 | 1.1 to 1.5 | 133 | 1.3 | 1.1 to 1.6 |
| Clergy, ministers of religion (44) | 1 | 1.3 | 0.0 to 5.1 | – | – | – |
| Arts, show business, information technology (35) | 8 | 1.1 | 0.5 to 2.1 | 7 | 2.0 | 0.8 to 3.7 |
| Truck, bus, and taxi drivers (64) | 69 | 1.0 | 0.8 to 1.2 | 3 | 0.7 | 0.1 to 1.6 |
| Material handling machine operators (65) | 49 | 0.8 | 0.6 to 1.0 | 2 | 0.5 | 0.1 to 1.6 |
| Occupations in health and social services (43) | 21 | 0.7 | 0.5 to 1.1 | 52 | 0.5 | 0.4 to 0.7 |
| Occupations in retail and wholesales (55) | 22 | 0.7 | 0.4 to 1.0 | 67 | 0.9 | 0.7 to 1.1 |
| Salaried workers in agriculture (69)* | 16 | 0.6 | 0.4 to 0.9 | 5 | 1.0 | 0.3 to 2.0 |
| Administrative and clerical staff (54) | 25 | 0.5 | 0.3 to 0.7 | 122 | 0.7 | 0.6 to 0.8 |
| Material handlers (67) | 36 | 0.5 | 0.3 to 0.6 | 14 | 0.2 | 0.1 to 0.2 |
| Police, penitentiary, and firefighting (53) | 32 | 0.5 | 0.3 to 0.6 | 6 | 1.0 | 0.4 to 2.0 |
| Middle management occupations (46) | 39 | 0.5 | 0.3 to 0.6 | 23 | 0.3 | 0.2 to 0.5 |
| Mining, machine operators, metal and welding (62) | 64 | 0.4 | 0.3 to 0.5 | 6 | 0.1 | 0.1 to 0.3 |
| University professors and researchers (34) | 19 | 0.4 | 0.2 to 0.6 | 22 | 0.7 | 0.4 to 1.0 |
| Industrial, laboratory, and information technicians (47) | 28 | 0.3 | 0.2 to 0.5 | 4 | 0.2 | 0.1 to 0.4 |
| Public administration middle management (45) | 4 | 0.3 | 0.1 to 0.7 | 8 | 0.6 | 0.3 to 1.1 |
| Top management in industry and commerce (23) | 8 | 0.3 | 0.1 to 0.5 | 2 | 8.1 | 0.8 to 23.1 |
| Middle management in industry and commerce (37) | 24 | 0.3 | 0.2 to 0.4 | 6 | 0.2 | 0.1 to 0.4 |
| Technical management in industry, transportation, and communications (38) | 12 | 0.2 | 0.1 to 0.3 | – | – | – |
| Hotel, restaurant, and personal services (56) | 5 | 0.2 | 0.1 to 0.4 | 127 | 0.7 | 0.6 to 0.9 |
| Foreman in industrial and services industry (48) | 14 | 0.2 | 0.1 to 0.3 | 2 | 0.5 | 0.1 to 1.4 |
