Characteristics of the study population
| *Missing date of birth. | |
| †Employment in the seven mills while operating to produce uranium and/or vanadium concentrates. | |
| No. of workers | 1485 |
| Excluded from analysis* | 1 |
| Person-years at risk | 49925 |
| Mill type | |
| Conventional mill only | 1412 (95.1%) |
| Upgrader only | 44 (3.0%) |
| Both | 28 (1.9%) |
| Vital status as of 31 Dec 1998 | |
| Alive | 656 (44.2%) |
| Dead | 810 (54.6%) |
| Unknown | 18 (1.2%) |
| Year of birth | 1921 median |
| 1872–1951 range | |
| Year of first employment† | |
| Prior to 1955 | 799 (53.8%) |
| 1955 or later | 685 (46.2%) |
| Duration of employment† | |
| 1–2 years | 634 (42.7%) |
| 3–9 years | 547 (36.9%) |
| 10 + years | 303 (20.4%) |
| Time since first employment† | |
| <10 years | 76 (5.1%) |
| 10–19 years | 128 (8.6%) |
| 20+ years | 1280 (86.3%) |