Table 1.
Demographic data and disease characteristics of the inception patients with Crohn’s disease n (%)
| CD | n = 331 |
| Males | 176 (53.2) |
| Age at presentation (yr) | 28; IQR 21-40 |
| Follow-up (yr) | 6; IQR: 2-9 |
| Familial IBD | 59 (17.8) |
| Location | |
| L1 | 115 (34.7) |
| L2 | 105 (31.7) |
| L3 | 108 (32.6) |
| L4 only | 4 (0.9) |
| Behavior at diagnosis | |
| B1 | 182 (55.0) |
| B2 | 66 (19.9) |
| B3 | 83 (25.1) |
| Perianal disease | 59 (17.8) |
| Arthritis | 85 (25.7) |
| Ocular | 12 (3.6) |
| Cutaneous | 29 (8.8) |
| Steroid use | 194 (58.6) |
| Azathioprine use | 197 (59.5) |
| Biological use | 27 (8.2) |
| Smoking habits at diagnosis | |
| No | 147 (44.4) |
| Ex | 46 (13.9) |
| Yes | 138 (41.7) |
CD: Crohn’s disease.