Table 3. Observed mortality and standardized mortality ratios (SMR) of selected cancers, according to time since first employment (years).
|
<15
|
15 to <25
|
25 to <35
|
⩾35
|
|||||
|---|---|---|---|---|---|---|---|---|
| Cause of death | Obs | SMR | Obs | SMR | Obs | SMR | Obs | SMR |
| Oral and pharyngeal cancer | 3 | 336.4 | 4 | 363.3 | 0 | 0 | 0 | 0 |
| Stomach cancer | 5 | 136.5 | 6 | 147.8 | 3 | 100.3 | 1 | 56.8 |
| Colorectal cancer | 2 | 85.5 | 2 | 54.6 | 7 | 223.7 | 5 | 264.2 |
| Peritoneal cancer | 0 | 0 | 4 | 1599.4a | 4 | 2062.9a | 6 | 5360.6a |
| Laryngeal cancer | 1 | 106.3 | 1 | 98.1 | 5 | 732.3a | 0 | 0 |
| Lung cancer | 6 | 90.1 | 28 | 295.1a | 32 | 439.3a | 10 | 287.4a |
| Pleural cancer | 2 | 1872.5a | 9 | 4578.4a | 9 | 5359.8a | 3 | 3373.3a |
| Ovarian cancer | 0 | 0 | 2 | 332.1 | 1 | 163.8 | 2 | 537.2 |
| Pleural+peritoneal cancers | 2 | 622.5 | 13 | 2910.2a | 13 | 3593.0a | 9 | 4480.7a |
| All cancers | 23 | 79.6 | 85 | 217.3a | 77 | 245.8a | 37 | 217.2a |
| All causes | 96 | 100.5 | 193 | 176.2a | 154 | 184.5a | 102 | 201.6a |
| Total no. of subjects | 170 | 384 | 933 | 479 | ||||
| Person-years | 25 263 | 16 065 | 8672 | 3023 | ||||
a
85% confidence interval does not include 100.