Characteristics of workers with lung cancer and controls
| Characteristic | Lung cancer cases (mean (SD)) | Controls (mean (SD)) |
|---|---|---|
| *Latency period is the duration from first work to the onset of lung cancer. | ||
| 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) | |