Clinical characteristics of patients with Crohn’s disease, ulcerative colitis and IBD-unclassified in the Swedish Inception Cohort in IBD (SIC-IBD)
| Crohn’s disease n=142 | Ulcerative colitis n=201 | IBD-unclassified n=24 | ||
| Disease location, n (%) | ||||
| Ileal (L1) | 48 (34) | |||
| Colonic (L2) | 50 (35) | |||
| Ileocolonic (L3) | 34 (24) | |||
| Upper GI (L4) | 1 (1) | |||
| Unknown | 9 (6) | |||
| Disease behaviour, n (%) | ||||
| Non-stricturing, non-penetrating (B1) | 115 (81) | |||
| Stricturing (B2) | 14 (10) | |||
| Penetrating (B3) | 5 (4) | |||
| Unknown | 8 (6) | |||
| Perianal disease, n (%) | 12 (8) | |||
| Disease extent, n (%) | ||||
| Ulcerative proctitis (E1) | 64 (32) | |||
| Left-sided colitis (E2) | 57 (28) | |||
| Extensive colitis (E3) | 76 (38) | |||
| Unknown | 4 (2) | |||
| Treatment-naive, n (%) | 128 (90) | 185 (92) | 21 (88) |
Upper GI (L4) refers to patients with only upper gastrointestinal Crohn’s disease.
GI, gastrointestinal; IBD-unclassified, inflammatory bowel disease unclassified.