Table 1.

Pediatric Ulcerative Colitis Activity Index (PUCAI)

Item	Category/points
Abdominal pain	No pain = 0 Pain can be ignored = 5 Pain cannot be ignored = 10
Rectal bleeding	None = 0 Small amount only, in less than 50% of stools = 20 Small amount with most stools = 20 Largest amount (50% of the stool content) = 30
Stool consistency of most stools	Formed = 0 Partially formed = 5 Completely unformed = 10
Number of stools per 24 h	0–2 = 0 3–5 = 5 6–8 = 10 >8 = 15
Nocturnal stools (any episode causing wakening)	No = 0 Yes = 10
Activity level	No limitation of activity = 0 Occasional limitation of activity = 5 Severe restricted activity = 10
	Sum of PUCAI (0–85)

Disease severity is defined by the following scores: severe, ≥65; moderate, 35–64; mild, 10–34; remission (inactive disease), <10.