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Disease activity index score
| Rate of weight loss (%) | Viscosity of stool | Hematochezia | Score (points) |
| None | Normal | Normal | 0 |
| ≤ 5 | 1 | ||
| 5-10 | Loose stool | Positive occult blood | 2 |
| 10-15 | 3 | ||
| > 15 | Liquid stool | Bloody stool with macrography | 4 |
Normal stool: Formed stool; Loose stool: Pasty and semi-formed stool without clinging to the anus; Liquid stool: Watery stool clinging to the anus.
