Table 1.
Demographic and clinical characteristics of the patient and control groups
| Characteristic | Controls (n = 355) | Crohn’s disease (n = 190) | Ulcerative colitis (n = 148) |
|---|---|---|---|
| Female/male | 188/167 (53/47) | 112/78 (59/41) | 95/53 (64/36) |
| Age (years) | 28 (16–81) | 31 (16–87) | 34 (14–73) |
| Age at diagnosis (years) | – | 24.7 (4–63) | 28.2 (5–71) |
| 0–16 years | – | 21 (12) | 13 (9) |
| 17–40 years | – | 138 (78) | 95 (68) |
| 41 + years | – | 17 (10) | 31 (22) |
| Disease duration (years) | – | 3.8 (0–40.9) | 4.3 (0–38.8) |
| Location of disease | |||
| Crohn’s disease | |||
| Ileum (L1) | – | 63 (36) | – |
| Colon (L2) | – | 39 (22) | – |
| Ileum and colon (L3) | – | 71 (40) | – |
| Upper GIT (L4) | – | 3 (2) | – |
| Perianal involvement | – | 51 (27) | 0 |
| Ulcerative colitis | |||
| Proctitis (E1) | – | – | 27 (20) |
| Left-sided (E2) | – | – | 63 (47) |
| Pancolitis (E3) | – | – | 44 (33) |
| Behaviour in CD | |||
| Inflammatory (B1) | – | 103 (54) | – |
| Stenosing(B2) | – | 34 (18) | – |
| Fistulizing (B3) | – | 53 (28) | – |
| Abdominal IBD surgery | – | 40 (21) | 5 (3) |
| Total colectomy | – | 2 (5) | 3 (60) |
| Partial colectomy | – | 5 (12) | 1 (20) |
| Ileocaecal resection | – | 28 (70) | 0 |
| Segmental ileal resection | – | 4 (10) | 0 |
| Other | – | 1 (3) | 1 (20) |
Values are median (range) or n (%). CD, Crohn’s disease; IBD, inflammatory bowel disease.