Scoring system for the Powell-Tuck Index
| Symptoms and signs | Score |
| Symptoms | |
| Bowel frequency | |
| 3–6 | 1 |
| >6 | 2 |
| Stool consistency | |
| Formed | 0 |
| Semi-formed | 1 |
| Liquid | 2 |
| Abdominal pain | |
| Before/after bowel motions | 1 |
| Prolonged | 2 |
| Anorexia | 1 |
| Nausea/vomiting | 1 |
| General health | |
| Normal | 0 |
| Slightly impaired | 1 |
| Activities restricted | 2 |
| Unable to work | 3 |
| Extracolonic manifestations | |
| One/mild | 1 |
| More than one/severe | 2 |
| Signs | |
| Abdominal tenderness | |
| Mild | 1 |
| Marked | 2 |
| Rebound | 3 |
| Body temperature (°C) | |
| <37.1 | 0 |
| 37.1–38 | 1 |
| >38 | 2 |
| Blood in stool | |
| Trace | 1 |
| More than trace | 2 |
| Sigmoidoscopy | |
| Non-haemorrhagic | 0 |
| Friable | 1 |
| Spontaneous bleed | 2 |