Observed (Obs) numbers of selected types of cancer and standardised incidence ratios (SIR) among male cement workers by cumulative exposure to dust
| Cancer site | ICD-9 code | Exposure, mg/m3 | n = 1582 | Test for trend | ||
|---|---|---|---|---|---|---|
| Obs | SIR | 95% CI | ||||
| All malignant neoplasms | 140–208 | <20.6 | 20 | 1.1 | 0.7 to 1.7 | |
| 20.6–55.3 | 28 | 1.2 | 0.8 to 1.7 | |||
| 55.4–130.2 | 40 | 1.4 | 1.0 to 1.9 | |||
| >130.2 | 43 | 1.3 | 1.0 to 1.8 | |||
| Total | 131 | 1.3 | 1.1 to 1.5 | p = 0.4 | ||
| Stomach | 151 | <20.6 | 0 | – | – | |
| 20.6–55.3 | 1 | 0.3 | 0.04 to 2.2 | |||
| 55.4–130.2 | 4 | 1.1 | 0.4 to 2.8 | |||
| >130.2 | 6 | 1.5 | 0.6 to 3.0 | |||
| Total | 11 | 0.9 | 0.4 to 1.4 | p < 0.05 | ||
| Colon and rectum | 153, 154 | <20.6 | 1 | 0.7 | 0.1 to 4.6 | |
| 20.6–55.3 | 2 | 1.0 | 0.3 to 4.0 | |||
| 55.4–130.2 | 3 | 1.2 | 0.4 to 3.8 | |||
| >130.2 | 4 | 1.4 | 0.5 to 3.8 | |||
| Total | 10 | 1.1 | 0.6 to 2.1 | p = 0.5 | ||
| Lung | 162 | <20.6 | 6 | 1.3 | 0.6 to 3.0 | |
| 20.6–55.3 | 5 | 0.8 | 0.4 to 2.0 | |||
| 55.4–130.2 | 14 | 2.0 | 1.2 to 3.4 | |||
| >130.2 | 15 | 1.8 | 1.1 to 3.0 | |||
| Total | 40 | 1.6 | 1.2 to 2.1 | p = 0.3 | ||
| Skin | 173 | <20.6 | 1 | 0.7 | 0.1 to 5.2 | |
| 20.6–55.3 | 4 | 2.3 | 0.9 to 6.1 | |||
| 55.4–130.2 | 1 | 0.5 | 0.1 to 3.4 | |||
| >130.2 | 6 | 2.5 | 1.1 to 5.4 | |||
| Total | 12 | 1.6 | 0.9 to 2.8 | p = 0.4 | ||
| Urinary bladder | 188 | <20.6 | 1 | 1.4 | 0.2 to 10.2 | |
| 20.6–55.3 | 3 | 3.2 | 1.0 to 9.8 | |||
| 55.4–130.2 | 1 | 0.8 | 0.1 to 6.0 | |||
| >130.2 | 2 | 1.5 | 0.4 to 6.0 | |||
| Total | 7 | 1.7 | 0.8 to 3.5 | p = 0.7 | ||