Year of birth, year of first health examination, total number of health examinations, and smoking habits by occupation
| Heavy construction equipment operators (n=14364) | Truck drivers (n=6364) | Referents* (n=119984) | |
|---|---|---|---|
| *Carpenters/electricians. | |||
| Year of birth, mean (SD) | 1943 (12) | 1939 (14) | 1947 (16) |
| Year of first health examination, mean (SD) | 1979 (6) | 1979 (6) | 1980 (6) |
| Number of visits to controls, median (range) | 2 (1–12) | 2 (1–8) | 2 (1–9) |
| Smoking habits | |||
| Non-smokers (%) | 31.8 | 29.8 | 47.8 |
| Ex-smokers (%) | 16.1 | 16.5 | 13.3 |
| Smokers (%) | 44.1 | 45.1 | 33.4 |
| Unknown (%) | 7.7 | 8.7 | 5.5 |