Observed (Obs) and expected (Exp) numbers of cases of bladder cancer and lung cancer, and standardised incidence ratio (SIR) by cumulative employment (y) in departments 7-150 with exposure to PAHs and by cumulative emplyoment (y) in potroom departments
| Obs | Exp | SIR | 95% CI | |
| Cumulative employment in departments7-150 with exposure to PAHs (y), lag 3 y | ||||
| Bladder cancer: | ||||
| <0.1 | 18 | 10.3 | 1.7 | 1.0 to 2.8 |
| 0.1–5 | 2 | 1.9 | 1.1 | 0.1 to 3.8 |
| 5–20 | 1 | 3.1 | 0.3 | 0.0 to 1.8 |
| >20 | 2 | 2.8 | 0.7 | 0.1 to 2.6 |
| Lung cancer: | ||||
| <0.1 | 17 | 17.4 | 1.0 | 0.6 to 1.6 |
| 0.1–5 | 5 | 3.2 | 1.5 | 0.5 to 3.6 |
| 5–20 | 4 | 5.3 | 0.8 | 0.2 to 1.9 |
| >20 | 1 | 4.6 | 0.2 | 0.0 to 1.2 |
| Cumulative employment in potroom departments (y), lag 3 y | ||||
| Bladder cancer: | ||||
| <0.1 | 14 | 10.0 | 1.4 | 0.8 to 2.3 |
| 0.1–5 | 3 | 1.3 | 2.3 | 0.5 to 6.7 |
| 5–20 | 3 | 3.4 | 0.9 | 0.2 to 2.6 |
| >20 | 3 | 3.4 | 0.9 | 0.2 to 2.6 |
| Lung cancer: | ||||
| <0.1 | 14 | 16.7 | 1.0 | 0.5 to 1.4 |
| 0.1–5 | 5 | 2.4 | 1.5 | 0.7 to 4.9 |
| 5–20 | 3 | 5.81 | 0.7 | 0.1 to 1.5 |
| >20 | 5 | 5.7 | 0.9 | 0.3 to 2.1 |
↵7-150 The following departments were assumed to be related to exposure to PAHs: Søderberg potrooms, anode production, and potlining.