Table 1 Swiss railway cohort: numbers of male railway employees, person‐years at risk and numbers of deaths, by cause and occupational group.
| ICD‐8 | ICD‐10 | Alpine train drivers No (%) | Lowland train drivers No (%) | Shunting yard engineers No (%) | Train attendants No (%) | Station masters No (%) | Total No (%) | |
|---|---|---|---|---|---|---|---|---|
| Number of people at risk | 925 | 6172 | 1378 | 6909 | 4757 | 20 141 | ||
| Person‐years at risk | 20 491 | 130 648 | 33 752 | 160 819 | 118 418 | 464 129* | ||
| Number of deaths (all causes) | 211 (100) | 1441 (100) | 394 (100) | 2089 (100) | 1278 (100) | 5413 (100) | ||
| Tumour, all | 140–239 | C00–97, D00‐48 | 87 (41.2) | 482 (33.4) | 135 (34.3) | 633 (30.3) | 419 (32.8) | 1756 (32.4) |
| Respiratory tumour | 160–163 | C30‐39, G450 | 15 (7.1) | 97 (6.7) | 30 (7.6) | 147 (7.0) | 89 (7.0) | 378 (7.0) |
| Haematopoietic and lymphatic malignancies | 200–209 | C81‐85, C90‐96 | 9 (4.3) | 46 (3.2) | 17 (4.3) | 52 (2.5) | 38 (3.0) | 162 (3.0) |
| Hodgkin's disease | 201 | C81 | 1 (0.5) | 7 (0.5) | 1 (0.3) | 4 (0.2) | 2 (0.2) | 15 (0.3) |
| Non‐Hodgkin's disease | 200, 202 | C82‐85 | 3 (1.4) | 10 (0.7) | 6 (1.5) | 15 (0.7) | 12 (0.9) | 46 (0.8) |
| Leukaemia | 204–207 | C91‐95 | 2 (0.9) | 23 (1.6) | 6 (1.5) | 21 (1.0) | 14 (1.1) | 66 (1.2) |
| Lymphoid leukaemia, | 204 | C91 | 0 (0.0) | 9 (0.6) | 4 (1.0) | 11 (0.5) | 12 (0.9) | 36 (0.7) |
| Myeloid leukaemia | 205 | C92 | 2 (0.9) | 9 (0.6) | 2 (0.5) | 8 (0.4) | 2 (0.2) | 23 (0.4) |
| Brain tumour | 191 | C71 | 0 (0.0) | 6 (0.4) | 5 (1.3) | 17 (0.8) | 10 (0.8) | 38 (0.7) |
*Person years at‐risk do not add up to total owing to rounding error.