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. 2025 Jul 2;60(9):1118–1144. doi: 10.1007/s00535-025-02271-7

Table 13.

Pediatric ulcerative colitis activity index

Score
Stomach pain None 0
Bearable 5
Unbearable 10
Rectal bleeding None 0
A small amount of bleeding is observed with < 50% of bowel movements 10
A small amount of bleeding is observed with almost every bowel movement 20
Heavy bleeding (> 50% of stool volume) 30
Stool properties Shaped 0
Partially shaped 5
Completely shapeless 10
Bowel movements per day, no 0–2 0
3–5 5
6–8 10
 ≥ 9 15
Nighttime bowel movements None 0
Yes 10
Activity level No interference with activities 0
Some interference with activity 5
Severe interference with activity 10

Maximum score = 85. Remission = < 10; mild = 10–30; moderate = 35–60; and severe = 65–85