Table 5.
Relative risk of RIS by primary cancer site (n = 359).
| Primary cancer site | Total n | % RIS | Relative risk (95% CI) | p-value | |
|---|---|---|---|---|---|
| Breast | 161 | 78.3% | ref | ref | |
| Abdomen | 4 | 25.0% | 0.32 (0.06, 1.75) | 0.19 | |
| Anal | 3 | 100.0% | 1.28 (1.18, 1.39) | <0.001 | |
| Brain | 2 | 100.0% | 1.28 (1.18, 1.39) | <0.001 | |
| Cervical | 17 | 88.2% | 1.13 (0.93, 1.37) | 0.22 | |
| Head | 8 | 37.5% | 0.48 (0.20, 1.18) | 0.11 | |
| Larynx | 3 | 100.0% | 1.28 (1.18, 1.39) | <0.001 | |
| Lung | 9 | 33.3% | 0.43 (0.17, 1.08) | 0.07 | |
| By cancer site | Pelvis | 10 | 60.0% | 0.77 (0.46, 1.28) | 0.31 |
| Pharynx | 4 | 100.0% | 1.28 (1.18, 1.39) | <0.001 | |
| Prostate | 75 | 58.7% | 0.75 (0.61, 0.92) | 0.01 | |
| Rectal | 22 | 63.6% | 0.81 (0.59, 1.13) | 0.21 | |
| Salivary | 6 | 66.7% | 0.85 (0.48, 1.51) | 0.58 | |
| Testicular | 5 | 40.0% | 0.51 (0.17, 1.50) | 0.22 | |
| Thorax | 2 | 50.0% | 0.64 (0.16, 2.56) | 0.53 | |
| Thyroid | 6 | 16.7% | 0.21 (0.04, 1.28) | 0.09 | |
| Uterine | 22 | 45.5% | 0.58 (0.36, 0.92) | 0.02 |
a
Model adjusted for age at primary diagnosis, gender, and latency.