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Disease Activity Score
| Score | Weight loss (%) | Stool consistency | Blood in stool |
|---|---|---|---|
| 0 | 0 | Normal | No blood |
| 1 | Lower than 5 | — | — |
| 2 | Lower than 10 | Slightly changed | Positive |
| 3 | Lower than 15 | — | Positive for 2 d |
| 4 | Lower than 20 | Diarrhea | Positive for more than 2 d |
