eTable 3. Pediatric Ulcerative Colitis Activitiy Index (PUCAI).

Criterion	Characteristics	Score
Abdominal pain	• No pain • Pain can be ignored • Pain cannot be ignored	0 5 10
Rectal bleeding	• None • Small amount only, in less than 50% of stools • Small amounts with most stools • Large amounts (>50% of stool content)	0 10 20 30
Stool consistency of most stools	• Formed • Partly formed • Completely unformed	0 5 10
Number of stools per 24 hours	0–2 3–5 6–8 8	0 5 10 15
Nocturnal stools (any episode causing wakening)	• No • Yes	0 10
Activity level	• No limitation of activity • Occasional limitation of activity • Severely restricted activity	0 5 10
Total (0 to 85 points)	<10: remission 10 to 40: mild activity 40 to 65: moderate activity 65 to 85: high activity	................