Main characteristics of the cohort of Royal Norwegian Navy servicemen
| Characteristics | All n=28 349 (100%) | Land-based personnel, n=12 943 (100%) | Vessel crews, n=15 406 (100%) |
| Cohort | |||
| Died during follow-up | 6191 (21.8) | 2494 (19.3) | 3697 (24.0) |
| Emigrated during follow-up | 940 (3.3) | 428 (3.3) | 512 (3.3) |
| Year of birth, range | 1883–1985 | 1883–1985 | 1893–1985 |
| Year of birth, median (IQR) | 1953 (26) | 1954 (25) | 1952 (26) |
| Year of start of service | |||
| <1951 | 2033 (7.2) | 874 (6.8) | 1 159 (7.5) |
| 1951–1959 | 4274 (15.1) | 1646 (12.7) | 2628 (17.1) |
| 1960–1969 | 6455 (22.8) | 3018 (23.3) | 3437 (22.3) |
| 1970–1979 | 4767 (16.8) | 2327 (18.0) | 2440 (15.8) |
| 1980–1989 | 5470 (19.3) | 2607 (20.1) | 2863 (18.6) |
| 1990–1999 | 4285 (15.1) | 2070 (16.0) | 2215 (14.4) |
| 2000–2004 | 1065 (3.8) | 401 (3.1) | 664 (4.3) |
| Years of Navy employment, average | 6.2 | 4.4 | 7.8 (3.0*) |
| Age at start of follow-up, range | 15–69 | 15–69 | 15–58 |
| Age at start of follow-up, median (IQR) | 20.0 (2.2) | 20.0 (2.3) | 20.1 (2.1) |
| Age at end of follow-up, range | 19–101 | 20–99 | 19–101 |
| Age at end of follow-up, median (IQR) | 60.8 (24.1) | 60.7 (24.4) | 60.9 (23.8) |
*Service aboard.