Paediatric Ulcerative Colitis Activity Index7: Score 0–85
| Severe >65, moderate 35–64, mild 10–34, remission <10 Clinical response is defined as decrease in PUCAI by ≥20 points18 | |
| 1 Abdominal pain | |
| No pain | 0 |
| Pain can be ignored | 5 |
| Pain cannot be ignored | 10 |
| 2 Rectal bleeding | |
| None | 0 |
| Small amount, in <50% of stools | 10 |
| Small amount in most stools | 20 |
| Large amount (>50% of the stool content) | |
| 3 Stool consistency | |
| Formed | 0 |
| Partially formed | 5 |
| Completely unformed | 10 |
| 4 Number of stools per 24 h | |
| 0–2 | 0 |
| 3–5 | 5 |
| 6–8 | 10 |
| >8 | 15 |
| 5 Nocturnal stools (any episode causing wakening) | |
| No | 0 |
| Yes | 10 |
| 6 Activity level | |
| No limitation of activity | 0 |
| Occasional limitation of activity | 5 |
| Severe restricted activity | 10 |