Relative risk estimates for non-smoking-related lung cancer among the relatives of 784 non-smoking-related lung cancer probands
| Relative | n | obs/exp | Relative risk (95% CI) | p Value |
|---|---|---|---|---|
| First | 2965 | 16/8.7 | 1.84 (1.05 to 2.99) | 0.018 |
| Second | 6471 | 19/10.6 | 1.79 (1.08 to 2.79) | 0.015 |
| Third | 18 029 | 49/46.0 | 1.07 (0.79 to 1.41) | 0.66 |
| Fourth | 45 067 | 114/93.7 | 1.22 (1.00 to 1.46) | 0.039 |
obs/exp, observed/expected.