Table 2.
Perianal fistulizing Crohn’s disease characteristics
| Elderly patients (EPs), n = 30 | Young patients (YPs), n = 60 | p | |
|---|---|---|---|
| Time between Crohn’s disease diagnosis and fistula onset, in months, median [IQR] | 0 [0–5.5] | 36 [0–99] | |
| < 0 months | 23% | 17% | |
| 0 to 12 months | 63% | 26% | |
| 1 to 10 years | 7% | 30% | |
| < 10 years | 7% | 22% | |
| Anal fistula classification | |||
| Cardiff 13 | 0.18 | ||
| 1, n (%) | 2 (6.7%) | 10 (16.7%) | |
| 2, n (%) | 28 (93.3%) | 50 (83.3%) | |
| AGA 14 | 1.0 | ||
| Simple, n (%) | 2 (6.7%) | 4 (6.7%) | |
| Complex, n (%) | 28 (93.3%) | 56 (93.3%) | |
| Associated anoperineal lesions | 0.3 | ||
| None, n (%) | 17 (56.7%) | 31 (51.7%) | |
| Ulceration*, n (%) | 13 (43.3%) | 25 (41.7%) | |
| Stenosis*, n (%) | 2 (6.7%) | 13 (21.7%) | |
IQR interquartile range, EPs age at first surgery ≥ 60, YPs age at first surgery < 60
*Two EPs and nine YPs had both an anal ulceration and a stenosis