Estimates of relative risk (RR) for all lung cancers in relatives of all lung cancer cases
| Relative | n | obs/exp | RR (95% CI) | p Value |
|---|---|---|---|---|
| First | 44 755 | 767/351.9 | 2.18 (2.03 to 2.34) | <0.001 |
| Second | 122 158 | 763/574.9 | 1.33 (1.23 to 1.43) | <0.001 |
| Third | 314 362 | 1922/1696.9 | 1.13 (1.08 to 1.18) | <0.001 |
| Fourth | 641 360 | 3311/3160.0 | 1.05 (1.01 to 1.08) | 0.0072 |
obs/exp, observed/expected.