Observed (Obs) numbers of selected types of cancer and standardised incidence ratios (SIR) among male cement workers by duration of employment and years since first employment
| Cancer site | ICD-9 code | Years since first employment, y | Duration of employment, y | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1–2 | 3–14 | >15 | Total | ||||||||
| Obs | SIR | Obs | SIR | Obs | SIR | Obs | SIR | 95% CI | |||
| All malignant neoplasms | 140–208 | <15 | 5 | 1.0 | 28 | 1.6 | 2 | 0.3 | 35 | 1.2 | 0.9 to 1.7 |
| 15–24 | 6 | 1.1 | 21 | 1.0 | 20 | 1.5 | 47 | 1.2 | 0.9 to 1.7 | ||
| >25 | 3 | 0.6 | 28 | 1.2 | 28 | 1.5 | 59 | 1.2 | 1.0 to 1.6 | ||
| Total | 14 | 0.9 | 77 | 1.3 | 50 | 1.3 | 141 | 1.2 | 1.0 to 1.4 | ||
| Stomach | 151 | <15 | 0 | – | 3 | 1.2 | 0 | – | 3 | 0.8 | 0.2 to 2.4 |
| 15–24 | 0 | – | 2 | 0.7 | 2 | 1.1 | 4 | 0.7 | 0.3 to 1.9 | ||
| >25 | 0 | – | 2 | 0.8 | 2 | 1.0 | 4 | 0.8 | 0.2 to 1.8 | ||
| Total | 0 | – | 7 | 0.9 | 4 | 0.9 | 11 | 0.7 | 0.4 to 1.3 | ||
| Colon and rectum | 153, 154 | <15 | 0 | – | 1 | 0.7 | 0 | 1 | 0.5 | 0.1 to 3.3 | |
| 15–24 | 0 | – | 1 | 0.6 | 2 | 1.9 | 3 | 0.9 | 0.3 to 2.9 | ||
| >25 | 1 | 2.1 | 2 | 1.0 | 3 | 1.7 | 6 | 1.4 | 0.6 to 3.1 | ||
| Total | 1 | 0.8 | 4 | 0.8 | 5 | 1.6 | 10 | 1.1 | 0.6 to 2.0 | ||
| Lung | 162 | <15 | 1 | 0.9 | 9 | 2.1 | 1 | 0.7 | 11 | 1.7 | 0.9 to 3.0 |
| 15–24 | 3 | 2.2 | 4 | 0.8 | 5 | 1.4 | 12 | 1.2 | 0.7 to 2.1 | ||
| >25 | 1 | 0.7 | 10 | 1.7 | 10 | 2.0 | 21 | 1.7 | 1.1 to 3.8 | ||
| Total | 5 | 1.3 | 23 | 1.5 | 16 | 1.6 | 44 | 1.5 | 1.1 to 2.1 | ||
| Skin | 173 | <15 | 1 | 2.8 | 2 | 1.6 | 0 | – | 3 | 1.5 | 0.5 to 4.6 |
| 15–24 | 0 | – | 2 | 1.3 | 2 | 2.2 | 4 | 1.4 | 0.5 to 3.8 | ||
| >25 | 0 | – | 1 | 0.6 | 4 | 2.8 | 5 | 1.4 | 0.6 to 3.3 | ||
| Total | 1 | 0.9 | 5 | 1.1 | 6 | 2.2 | 12 | 1.4 | 0.8 to 2.5 | ||
| Urinary bladder | 188 | <15 | 0 | – | 1 | 1.7 | 0 | – | 1 | 1.1 | 0.2 to 7.5 |
| 15–24 | 0 | – | 1 | 1.2 | 2 | 4.2 | 3 | 2.0 | 0.6 to 6.0 | ||
| >25 | 0 | – | 2 | 1.9 | 2 | 2.4 | 4 | 1.9 | 0.7 to 5.0 | ||
| Total | 0 | – | 4 | 1.6 | 4 | 2.7 | 8 | 1.8 | 0.9 to 3.5 | ||