Table 5. Comparison between Korean patients with and without perianal fistulizing disease at diagnosis.
| Variable | Perianal fistulizing disease | p-value | ||
|---|---|---|---|---|
| Present (n=108) | Absent (n=133) | |||
| Male | 79 (73.1) | 77 (57.9) | 0.020 | |
| Age at diagnosis (yr) | 14.6 (12.2–15.9) | 12.5 (13.0–16.2) | 0.586 | |
| 1st degree family history of IBD | 2 (1.9) | 9 (6.8) | 0.132 | |
| Previous bowel resection history | 1 (0.9) | 3 (2.3) | 0.767 | |
| Height z-score | −0.3±1.0 | −0.4±1.2 | 0.503 | |
| Weight z-score | −0.7±1.3 | −1.1±1.3 | 0.036 | |
| BMI z-score | −0.7 (−1.6–0.0) | −1.2 (−2.1–−0.3) | 0.009 | |
| LGI tract location | 0.222 | |||
| No involvement | 0 (0.0) | 2 (1.5) | ||
| L1 | 12 (11.1) | 24 (18.0) | ||
| L2 | 10 (9.3) | 14 (10.5) | ||
| L3 | 86 (79.6) | 93 (69.9) | ||
| UGI tract location | 0.076 | |||
| No involvement | 42 (38.9) | 56 (42.1) | ||
| L4a | 34 (31.5) | 27 (20.3) | ||
| L4b | 18 (16.7) | 37 (27.8) | ||
| L4ab | 14 (13.0) | 13 (9.8) | ||
| Luminal disease behavior | 0.828 | |||
| B1 | 92 (85.2) | 116 (87.2) | ||
| B2 | 13 (12.0) | 14 (10.5) | ||
| B3/B2B3 | 3 (2.8) | 3 (2.3) | ||
Values are presented as number (%), median (interquartile range), or mean±standard deviation.
IBD: inflammatory bowel disease, BMI: body mass index, LGI: lower gastrointestinal, UGI: upper gastrointestinal, L1: distal 1/3 ileum±limited cecal disease, L2: colonic disease, L3: ileocolonic disease, L4a: upper disease proximal to the ligament of Treitz, L4b: upper disease distal to the ligament of Treitz and proximal to the distal 1/3 ileum, L4ab: upper disease involvement in both L4a and L4b, B1: nonstricturing nonpenetrating behavior, B2: stricturing behavior, B3: penetrating behavior, B2B3: both B2 and B3.