Standardised incidence ratios (SIR) for primary lung cancer and all cancers among men by type of ship* and officer status†
| Type of ship* | Officers | Non-officers | ||||
|---|---|---|---|---|---|---|
| Obs | SIR | 95% CI | Obs | SIR | 95% CI | |
| *Based on longest held employment. | ||||||
| †Based on latest held job. | ||||||
| Dry cargo vessels (including container ships) | ||||||
| Lung cancer | 29 | 1.5 | 1.0 to 2.1 | 45 | 2.6 | 1.9 to 3.5 |
| All other cancers | 144 | 1.1 | 0.9 to 1.3 | 163 | 1.3 | 1.1 to 1.6 |
| Passenger ships | ||||||
| Lung cancer | 23 | 1.0 | 0.6 to 1.5 | 51 | 1.6 | 1.2 to 2.1 |
| All other cancers | 147 | 1.1 | 0.9 to 1.4 | 259 | 1.2 | 1.0 to 1.3 |
| Tankers and gas tankers | ||||||
| Lung cancer | 15 | 1.4 | 0.8 to 2.3 | 26 | 3.0 | 2.0 to 4.5 |
| All other cancers | 86 | 1.2 | 1.0 to 1.5 | 73 | 1.3 | 1.0 to 1.7 |
| Smaller ships, supply ships | ||||||
| Lung cancer | 47 | 1.3 | 1.0 to 1.7 | 23 | 1.9 | 1.2 to 2.8 |
| All other cancers | 263 | 1.3 | 1.1 to 1.4 | 137 | 1.1 | 1.0 to 1.3 |
| All ships | ||||||
| Lung cancer | 114 | 1.2 | 1.1 to 1.5 | 145 | 2.1 | 1.8 to 2.5 |
| All other cancers | 640 | 1.3 | 1.1 to 1.3 | 632 | 1.2 | 1.1 to 1.3 |