Lung cancer incidence and mortality between 1971 and 1995 in heavy construction equipment operators and truck drivers compared to two referent groups, carpenters/electricians referents (REF1) and the general population (REF2)
| Heavy construction equipment operators | Truck drivers | |
|---|---|---|
| *Standardised incidence ratio comparing incidence of lung cancer, 95% confidence interval in parentheses. | ||
| †Standardised mortality ratio comparing mortality from lung cancer, 95% confidence interval in parentheses. | ||
| SIR and SMR based on the carpenter/electrician referents (REF1) were adjusted for age, time period, and smoking habits. | ||
| SIR and SMR based on the general population referents (REF2) were adjusted for age and calendar year. | ||
| Number of incident cases of lung cancer | 61 | 61 |
| Number of deaths from lung cancer | 49 | 57 |
| Person-years | 217331 | 97930 |
| SIR* (95% CI) | ||
| REF1 | 0.87 (0.66 to 1.11) | 1.29 (0.99 to 1.65) |
| REF2 | 0.76 (0.58 to 0.97) | 1.14 (0.87 to 1.46) |
| SMR† (95% CI) | ||
| REF1 | 0.83 (0.61 to 1.09) | 1.37 (1.04 to 1.78) |
| REF2 | 0.70 (0.51 to 0.92) | 1.18 (0.89 to 1.53) |