Table 1.
Baseline characteristics of the study population.
| All patients (n = 608) | |
|---|---|
| Age, y, median (IQR) | 30.5 (25–39) |
| Age at diagnosis, y, median (IQR) | 29 (23–37) |
| Male, n (%) | 416 (68.4%) |
| Disease duration (y), n (%) | |
| ≤1 | 179 (29.4%) |
| 1–5 | 228 (37.5%) |
| 5–10 | 138 (22.7%) |
| >10 | 63 (10.4%) |
| Disease location, n (%) | |
| L1 ± L4 | 257 (42.3%) |
| L2 ± L4 | 50 (8.2%) |
| L3 ± L4 | 301 (49.5%) |
| Disease behavior, n (%) | |
| B1: Inflammatory | 241 (39.64%) |
| B2: Stricturing | 265 (43.58%) |
| B3: Penetrating | 47 (7.73%) |
| B2B3: Stricturing + Penetrating | 55 (9.05%) |
| Perianal disease, n (%) | 328 (53.9%) |
| Complicated disease, n (%) | 367 (60.4%) |
| Appendectomy, n (%) | 51 (8.4%) |
| Perianal operation, n (%) | 178 (29.3%) |
| Surgical history, n (%) | 100 (16.4%) |
| Treatment naïve patients | 192 (31.6%) |
| Active/remission | 537/71 |
y, years; IQR, interquartile range.