Table 5.
Hazard ratios (95% CIs) for site-specific cancers by years of PCB exposure with combined exposure categories due to small number of cases adjusted for age, sex, and time period ( Danish residents).
| Cancer site (ICD-10) | Continuous | Nonexposed | 0–2.9 y | y | ||||
|---|---|---|---|---|---|---|---|---|
| Cases (n) | HR (95% CI) | Cases (n) | HR (95% CI) | Cases (n) | HR (95% CI) | Cases (n) | HR (95% CI) | |
| Rectum (C20) | 111 | 1.01 (0.95, 1.07) | 85 | 1.00 | 10 | 0.60 (0.31, 1.16) | 16 | 1.41 (0.82, 2.42) |
| Liver (C22) | 40 | 1.08 (1.02, 1.15) | 25 | 1.00 | 7 | 1.48 (0.64, 3.43) | 8 | 2.45 (1.10, 5.45) |
| Corpus uteri (C54–55, C58)a | 70 | 1.03 (0.97, 1.09) | 53 | 1.00 | 7 | 0.69 (0.31, 1.51) | 10 | 1.27 (0.64, 2.52) |
| Ovary, fallopian tube, and broad ligament (C56, C570–C574)a | 73 | 1.00 (0.93, 1.09) | 60 | 1.00 | 7 | 0.60 (0.28, 1.32) | 6 | 0.74 (0.32, 1.72) |
| Kidney (C64) | 86 | 1.01 (0.94, 1.09) | 65 | 1.00 | 14 | 1.11 (0.62, 1.97) | 7 | 0.93 (0.42, 2.03) |
| Meningiomas (C70, D32, D42) | 53 | 1.06 (1.00, 1.12) | 32 | 1.00 | 7 | 1.14 (0.50, 2.58) | 14 | 3.19 (1.69, 6.02) |
Note: CI, confidence interval; HR, hazard ratio; ICD-10, International Statistical Classification of Diseases and Related Health Problems, 10th Revision.
aRestricted to female population.