Sociodemographic and clinical characteristics at diagnosis according to age of 4310 patients with ulcerative colitis in a population-based study from northern France
| At UC diagnosis | <17 years old | 17–39 years old | 40–59 years old | >60 years old | p Value* |
|---|---|---|---|---|---|
| N (%) | 213 (5) | 2434 (57) | 1189 (27) | 474 (11) | – |
| Median age (IQR) | 14 (11–16) | 29 (24–34) | 47 (43–52) | 68 (64–73) | – |
| UC incidence (/105) (CI 95%) | 1.1 (1.0 to 1.3) | 7.5 (7.2 to 7.8) | 4.7 (4.4 to 4.9) | 3.1 (2.9 to 3.4) | <10−4 |
| Male Gender (%) | 44 | 50 | 66 | 62 | <10−4 |
| Family history of IBD (%) | 13 | 7 | 5 | 3 | <10−4 |
| Median time from symptoms to diagnosis (months) (IQR) | 2 (1–4) | 2 (1–6) | 2 (1–5) | 2 (1–4) | 0.28 |
| Rectal bleeding (%) | 94 | 94 | 91 | 88 | <10−4 |
| Abdominal pain (%) | 57 | 54 | 46 | 44 | <10−4 |
| Weight loss (%) | 29 | 25 | 22 | 29 | <10−4 |
| EIMs (%) | 5 | 3 | 3 | 3 | <0.05 |
| Proctitis (E1) (%) | 31 | 50 | 48 | 29 | <10−4 |
| Left-sided colitis (E2) (%) | 27 | 26 | 30 | 45 | |
| Extensive colitis (E3) (%) | 41 | 24 | 22 | 26 |
*p is a global comparison.
EIMs, extra intestinal manifestations; IBD, Inflammatory bowel disease; UC, ulcerative colitis.