Table 3.
The pouchitis disease activity index
| Criteria | Score |
| Clinical | |
| Stool frequency | |
| Usual postoperative stool frequency | 0 |
| 1-2 stool⁄d > postoperative usual | 1 |
| 3 or more stool⁄d > postoperative usual | 2 |
| Rectal bleeding | |
| None or rare | 0 |
| Present daily | 1 |
| Fecal urgency or abdominal cramps | |
| None | 0 |
| Occasional | 1 |
| Usual | 2 |
| Fever (temperature > 37.8 °C) | |
| Absent | 0 |
| Present | 1 |
| Endoscopic findings | |
| Edema | 1 |
| Granularity | 1 |
| Friability | 1 |
| Loss of vascular pattern | 1 |
| Mucous exudates | 1 |
| Ulceration | 1 |
| Histological findings - acute histological inflammation | |
| Polymorphonuclear leucocyte infiltration | |
| Mild | 1 |
| Moderate without crypt abscess | 2 |
| Severe with crypt abscess | 3 |
| Ulceration per low-power field (mean) | |
| < 25%/25%-50%/> 50% | 1/2/3 |
| Total pouchitis disease activity index (max 18) pouchitis ≥ 7 |