SIR for various cancers and 95% CIs, male Port Hope workers (1969–1999)
| Cause | Observed* | Expected† | SIR (95% CI) | p Value |
|---|---|---|---|---|
| Lip cancer | 5 | 6.12 | 0.82 (0.27 to 1.91) | 0.85 |
| Oesophageal cancer | 5 | 6.23 | 0.80 (0.26 to 1.87) | 0.82 |
| Stomach cancer | 13 | 17.38 | 0.75 (0.40 to 1.28) | 0.35 |
| Colon cancer | 33 | 39.78 | 0.83 (0.57 to 1.16) | 0.32 |
| Rectal cancer | 22 | 23.95 | 0.92 (0.58 to 1.39) | 0.79 |
| Pancreatic cancer | 10 | 12.37 | 0.81 (0.39 to 1.49) | 0.62 |
| Laryngeal cancer | 11 | 9.55 | 1.15 (0.58 to 2.06) | 0.72 |
| Lung cancer | 108 | 99.92 | 1.08 (0.89 to 1.30) | 0.44 |
| Malignant melanoma | 11 | 8.24 | 1.33 (0.67 to 2.39) | 0.42 |
| Prostate cancer | 89 | 94.32 | 0.94 (0.76 to 1.16) | 0.63 |
| Kidney cancer | 5 | 13.11 | 0.38 (0.12 to 0.89) | 0.02 |
| Bladder and other urinary cancer | 30 | 29.59 | 1.01 (0.68 to 1.45) | 0.99 |
| Bladder cancer | 26 | 28.54 | 0.91 (0.60 to 1.33) | 0.72 |
| Brain and other CNS cancer | 9 | 7.43 | 1.21 (0.55 to 2.30) | 0.66 |
| Brain cancer | 9 | 6.91 | 1.30 (0.60 to 2.47) | 0.52 |
| NHL | 15 | 15.35 | 0.98 (0.55 to 1.61) | >0.99 |
| All leukaemia | 10 | 12.23 | 0.82 (0.39 to 1.50) | 0.65 |
| All cancers | 418 | 453.52 | 0.92 (0.84 to 1.01) | 0.10 |
*The number of observed cases reflects the incidence of newly diagnosed cancer cases where a single individual can contribute more than one case of cancer.
†Adjusted for age and calendar year at risk by stratification.
CNS, central nervous system; NHL, non-Hodgkin's lymphoma; SIR, standardised incidence ratio.