Table 1

Basic characteristics of the Port Hope cohort

CharacteristicAll workers with no mining experienceRadium workersUranium workers
Total number of individuals30005282472
 Males (%)2645 (88.2)497 (94.1)2148 (86.9)
 Females (%)355 (11.8)31 (5.9)324 (13.1)
Lifetime* RDP exposure, WLM, mean (range, SD)
 Males13.3 (0–627.6, 45.9)43.9 (0–627.6, 86.9)6.3 (0–408.2, 24.1)
 Females4.9 (0–62.7, 9.6)19.7 (0.5–62.7, 15.5)3.5 (0–45.1, 7.5)
Lifetime* γ-dose, mSv, mean (range, SD)
 Males116.4 (0–5098.8, 312.1)325.6 (0.4–5098.8, 562.1)67.9 (0–2433.2, 185.7)
 Females36.2 (0–464.7, 69.7)129.0 (1.9–329.4, 85.8)27.3 (0–464.7, 61.1)
  • *Individual exposures cumulated up to the end of follow-up.

  • mSv, millisieverts; RDP, radon decay products; WLM, working level months.