Total | Tumor casesa | Cancer casesb | Tumor-free cases | |
---|---|---|---|---|
Study participants | 1,595 | 20 | 18 | 1,575 |
Age in years (median and range) | 62 (27 – 90) | |||
End of follow-up | 62 (27 – 90) | 68 (43 – 80) | 69 (43 – 80) | |
At diagnosis | 67 (38 – 78) | 67 (38–78) | ||
Smoking status at baseline [N (%)]c | ||||
Never | 548 (34.4) | 5 (25.0) | 4 (22.2) | 543 (34.5) |
Former | 614 (38.5) | 12 (60.0) | 11 (61.1) | 602 (38.4) |
Current | 430 (27.0) | 3 (15.0) | 3 (16.7) | 427 (27.1) |