Subjects (n) | 130 | 627 |
Year of birth | 1925.0 (7.4) | 1925.5 (8.1) |
Year of entering tin mine | 1951.4 (6.2) | 1952.7 (6.5) |
Age at entering tin mine | 26.4 (6.9) | 27.2 (7.1) |
Subjects with exposure to dust (n) | 112 | 462 |
Cumulative exposure to total dust (mg/m3-y) | 112.4 (92.9) | 98.6 (75.4) |
Cumulative arsenic exposure | 525.5 (581.8) | 439.4 (469.1) |
Duration of exposure | 14.4 (8.4) | 14.4 (8.6) |
Smokers (n) | 115 | 517 |
Smoking (pack-years, only for smokers) | 39.0 (20.0) | 35.4 (21.2) |
Smoking-years (only for smokers) | 33.9 (10.0) | 32.8 (10.7) |
Age at onset of lung cancer (y) | 60.7 (8.4) | |
Latency period* | 30.3 (7.9) | |