Characteristics of controls and patients with ulcerative colitis who died from colorectal cancer
| Cases n(%) | Controls n(%) | |
| Sex | ||
| Male | 26 (65) | 52 (51) |
| Female | 14 (35) | 50 (49) |
| Age at diagnosis of UC (y) | ||
| <15 | 9 (22.5) | 14 (14) |
| 15–29 | 12 (30) | 43 (42) |
| 30–49 | 11 (27.5) | 31 (30) |
| 50+ | 8 (20) | 14 (14) |
| Extent at diagnosis | ||
| Proctitis | 1 (2.5) | 7 (6.9) |
| Left-sided | 9 (22.5) | 29 (28.4) |
| Total | 23 (57.5) | 48 (47.1) |
| Unknown | 7 (17.5) | 18 (17.6) |