Table 2. Observed mortality and standardized mortality ratios (SMR) of selected cancers, according to duration of employment (years).
|
<1
|
1 to <5
|
5 to <10
|
⩾10
|
|||||
|---|---|---|---|---|---|---|---|---|
| Cause of death | Obs | SMR | Obs | SMR | Obs | SMR | Obs | SMR |
| Oral and pharyngeal cancer | 4 | 388.7a | 2 | 252.3 | 0 | 0 | 1 | 132.6 |
| Stomach cancer | 5 | 142.4 | 2 | 62.6 | 6 | 263.6 | 2 | 57.3 |
| Colorectal cancer | 7 | 223.4 | 1 | 35.2 | 3 | 145.5 | 5 | 167.2 |
| Peritoneal cancer | 1 | 468.4 | 1 | 494.8 | 3 | 2063.1a | 9 | 4298.0a |
| Laryngeal cancer | 1 | 105.4 | 3 | 397.9 | 2 | 390.3 | 1 | 137.7 |
| Lung cancer | 12 | 139.1 | 17 | 250.8a | 11 | 232.9a | 36 | 530.9a |
| Pleural cancer | 6 | 3427.7a | 11 | 7659.3a | 3 | 2978.6a | 3 | 2129.9a |
| Ovarian cancer | 2 | 440.8 | 0 | 0 | 0 | 0 | 3 | 573.7a |
| Pleural+peritoneal cancers | 7 | 1801.8a | 12 | 3471.2a | 6 | 2437.8a | 12 | 3426.1a |
| All cancers | 51 | 149.0a | 50 | 165.7a | 41 | 191.4a | 80 | 261.7a |
| All causes | 136 | 138.6a | 131 | 148.6a | 97 | 156.7a | 181 | 199.1a |
| Total no. of subjects | 671 | 530 | 328 | 437 | ||||
| Person-years | 18 870 | 16 194 | 9234 | 8726 | ||||
a
85% confidence interval does not include 100.