Observed (Obs) and expected (Exp) number of cancers, SIR (95% CI) among 265 pilots (5696.0 person-years 1955–97) ever employed at Icelandair
| Cancer sites (ICD-7) | Obs | Exp | SIR | 95% CI |
| All cancers (140-205) | 19 | 16.43 | 1.16 | 0.70 to 1.81 |
| Oesophagus (150) | 0 | 0.26 | 0.00 | — to 14.11 |
| Colon (153) | 0 | 1.10 | 0.00 | — to 3.33 |
| Gall bladder (155.1) | 1 | 0.08 | 12.50 | 0.16 to 69.55 |
| Lung (162) | 2 | 2.24 | 0.89 | 0.10 to 3.22 |
| Prostate (177) | 4 | 2.84 | 1.41 | 0.38 to 3.61 |
| Kidney (180) | 2 | 0.99 | 2.02 | 0.23 to 7.29 |
| Malignant melanoma of the skin (190) | 5 | 0.32 | 15.63 | 5.04 to 36.46 |
| Eye (192) | 1 | 0.07 | 14.29 | 0.19 to 79.48 |
| Brain (193) | 2 | 0.76 | 2.63 | 0.30 to 9.50 |
| Thyroid (194) | 1 | 0.44 | 2.27 | 0.03 to 12.64 |
| Unspecified sites (199) | 0 | 0.33 | 0.00 | — to 11.12 |
| Leukaemia (204) | 1 | 0.40 | 2.50 | 0.03 to 13.91 |
| Acute myeloid leukaemia (204) | 1 | 0.17 | 5.88 | 0.08 to 32.73 |
Footnotes as for table 2.