Table 3 Risk of lung cancer in quitters relative to smokers by time since quitting
Group | Years since quitting | Reported RR* | Estimated RR | Difference |
|---|---|---|---|---|
Males | < 10 | 0.66 | 0.70 | -0.04 |
|  | 10 – 19 | 0.42 | 0.35 | 0.07 |
|  | 20 – 29 | 0.18 | 0.18 | 0.00 |
|  | ≥ 30 | 0.08 | 0.10 | -0.02 |
Females | < 10 | 0.69 | 0.57 | 0.12 |
|  | 10 – 19 | 0.21 | 0.21 | 0.00 |
|  | ≥ 20 | 0.05 | 0.08 | -0.03 |