Table 2
Incidence of cancer at different sites in workers exposed to VCM; observation period 1953–93
| Tumour site | <1 ppm-years | 1–5 ppm-years | ⩾5 ppm-years | Total | 95% CI | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Obs | Exp | Obs | Exp | Obs | Exp | Obs | Exp | ||||||||||
| Stomach cancer (151) | 2 | 1.6 | 2 | 0.77 | 1 | 2.05 | 5 | 4.41 | 0.37 to 2.65 | ||||||||
| Colon cancer (153) | 2 | 1.7 | 2 | 0.88 | 2 | 2.0 | 6 | 4.63 | 0.48 to 2.82 | ||||||||
| Prostate cancer (177) | 3 | 3.4 | 0 | 1.67 | 3 | 4.48 | 6 | 9.68 | 0.23 to 1.35 | ||||||||
| Thyroid cancer (194) | 0 | 0.13 | 0 | 0.08 | 2 | 0.13 | 2 | 0.34 | 0.71 to 21.34 | ||||||||
| Unspecified cancer (178) | 0 | 0.8 | 1 | 0.4 | 1 | 0.99 | 1 | 2.19 | 0.02 to 2.54 | ||||||||
| Testes (178) | 0 | 0.29 | 0 | 0.25 | 1 | 0.21 | 1 | 0.75 | 0.03 to 7.43 | ||||||||
