Modified Mayo Endoscopic Score37
| Ascending | Transverse | Descending | Sigmoid | Rectum | |
| Mayo endoscopic subscore: evaluated macroscopically at most severely inflamed part per segment (score 0–3: see table 2) | a | b | c | d | e |
| Maximal Extent in decimetres (during withdrawal) | ME | ||||
| Extended Modified Score (EMS) | EMS = (a+b+c+d+e) x ME | ||||
| Modified Mayo Endoscopic Score (MMES) | MMES=EMS/(number of segments with score >0) | ||||