Table 1 Demographics, smoking history, and family history by prior cancer group for 16,630 participants in the CGN (1998–2012)
From: Are rare cancer survivors at elevated risk of subsequent new cancers?
Characteristic | No prior cancers (N = 5684) | ≥1 prior common cancer (N = 8604) | ≥1 prior rare cancer (N = 2342) | Overall (N = 16,630) |
|---|---|---|---|---|
Median (range) follow-up time (years) | 7.1 (0–14.9) | 7.9 (0–14.6) | 4.9 (0–12.3) | 7.3 (0–14.9) |
Age at enrollment (years) | ||||
< 40 | 1399 (25%) | 383 (5%) | 269 (12%) | 2051 (12%) |
40–60 | 2663 (47%) | 3567 (41%) | 963 (41%) | 7193 (43%) |
> 60 | 1622 (28%) | 4654 (54%) | 1110 (47%) | 7386 (45%) |
Female sex | 3416 (60%) | 4889 (57%) | 1584 (68%) | 9889 (59%) |
Ever used tobacco products | 1902 (33%) | 3870 (45%) | 826 (35%) | 6598 (40%) |
Any first-degree relative with cancer | 5077 (89%) | 5849 (68%) | 1470 (63%) | 12,396 (75%) |