Clinical scoring system for the Simple Clinical Colitis Activity Index
| Symptom | Score |
| Bowel frequency (day) | |
| 1–3 | 0 |
| 4–6 | 1 |
| 7–9 | 2 |
| >9 | 3 |
| Bowel frequency (night) | |
| 1–3 | 1 |
| 4–6 | 2 |
| Urgency of defecation | |
| Hurry | 1 |
| Immediately | 2 |
| Incontinence | 3 |
| Blood in stool | |
| Trace | 1 |
| Occasionally frank | 2 |
| Usually frank | 3 |
| General well being | |
| Very well | 0 |
| Slightly below par | 1 |
| Poor | 2 |
| Very poor | 3 |
| Terrible | 4 |
| Extracolonic features | 1 per manifestation |