Table 1 Baseline characteristics of colorectal cancer cases and their matched cancer-free controls
Characteristics | Colorectal cancer cases | Cancer-free control population |
|---|---|---|
N = 6,087 | N = 24,348 | |
Gender, n (%) | ||
Male | 3,434 (56) | 13,736 (56) |
Female | 2,653 (44) | 10,612 (44) |
Age at index date | ||
< 44 | 79 (1) | 316 (1) |
45–54 | 493 (8) | 1,972 (8) |
55–64 | 1,405 (23) | 5,620 (23) |
65–74 | 2,208 (36) | 8,832 (36) |
75–84 | 1,652 (27) | 6,608 (27) |
≥ 85 | 250 (4) | 1,000 (4) |
Mean ± SD | 68.7 ± 10.0 | 68.7 ± 10.0 |
Year of diagnosis | ||
2007–2009 | 1,495 (25) | 5,980 (25) |
2010–2012 | 2,451 (40) | 9,804 (40) |
2013–2014 | 2,141 (35) | 8,564 (35) |
Duration of history available (years) | ||
Mean (± SD) | 4.7 ± 2.3 | 4.7 ± 2.3 |
Tumour site | ||
Colon | 4,042 (66) | NA |
Proximal | 1,910 (31) | NA |
Distal | 2,022 (33) | NA |
Unspecified | 110 (2) | NA |
Rectum | 1,926 (32) | NA |
Rectosigmoid | 119 (2) | NA |
Tumour stage | ||
I | 1,171 (19) | NA |
II | 1,631 (27) | NA |
III | 1,884 (31) | NA |
IV | 1,242 (20) | NA |
Unknown | 159 (3) | NA |