Table 1.
Demographic and clinical characteristics of the patients, n (%)
| Variables | Number of patients |
| Gender | |
| Male | 47 (73.4) |
| Female | 17 (26.6) |
| Age at diagnosis | 27.5 (8, 78) |
| Disease period before operation | 9.5 (2.0, 48.0) |
| Montreal classification | |
| Age, yr | |
| A1 (≤ 16) | 6 (9.4) |
| A2 (17-40) | 49 (76.6) |
| A3 (> 40) | 9 (14.1) |
| Behavior | |
| B1 (Inflammatory) | 2 (3.1) |
| B2 (Stricturing) | 25 (39.1) |
| B3 (Penetrating) | 37 (57.8) |
| Location | |
| L1 (Terminal ileum) | 9 (14.1) |
| L2 (Colon) | 1 (1.6) |
| L3 (Ileocolon) | 47 (73.4) |
| L4 (Upper disease) | 7 (10.9) |
| Perianal disease | 22 (34.4) |
| Preoperative use of medication | 29 (45.3) |
| Steroid | 23 (35.9) |
| Immunomodulator | 24 (37.5) |
| Anti-TNF | 4 (6.2) |
TNF: Tumor necrosis factor.