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Calculator: Pediatric ulcerative colitis activity index (PUCAI)

Calculator: Pediatric ulcerative colitis activity index (PUCAI)

Abdominal pain

No pain (0 points)

Pain can be ignored (5 points)

Pain cannot be ignored (10 points)
Rectal bleeding

None (0 points)

Small amount only, in <50% of stools (10 points)

Small amount with most stools (20 points)

Large amount (>50% of the stool content) (30 points)
Stool consistency of most stools

Formed (0 points)

Partially formed (5 points)

Completely unformed (10 points)
Number of stools per 24 hours

0 to 2 (0 points)

3 to 5 (5 points)

6 to 8 (10 points)

>8 (15 points)
Nocturnal stools (any episode causing wakening)

No (0 points)

Yes (10 points)
Activity level

No limitation of activity (0 points)

Occasional limitation of activity (5 points)

Severe restricted activity (10 points)

Important: Inputs must be complete to perform calculation.

Total criteria point count:


PUCAI interpretation

0 to 9 points: Remission
10 to 34 points: Mild disease
35 to 64 points: Moderate disease
65 to 85 points: Severe disease

  • Answers should reflect a daily average of the last 2 days.
  • For rectal bleeding, "large amount" describes blood present in most stools.
  • For number of stools, several small stools clustered over a short period of time should be considered as 1 stool, since this may be due to incomplete evacuation or tenesmus.
  • PUCAI: pediatric ulcerative colitis activity index.

Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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