Table 14.

Mayo score

Scores are based on findings over the course of 3 days		Score
Bowel movements, no	Once per day (or normal number)	0
	More than 1–2 times/day	1
	More than 3–4 times/day	2
	More than 5 times/day	3
Bloody stools	No bloody stools	0
	Slight presence of blood in less than half of all bowel movements	1
	Blood is clearly present in most bowel movements	2
	Bowel movement comprises a large quantity of blood	3
Mucosal findings	Normal or inactive findings	0
	Mild (erythema, decreased vascular translucency, mild fragility)	1
	Moderate (marked erythema, loss of vascular translucency, fragility, erosions)	2
	Severe (spontaneous bleeding, ulcers)	3
PGA	Normal	0
	Mild disease	1
	Moderate disease	2
	Severe disease	3

PGA Physician Global Assessment

Maximum score = 12. Remission = ≤ 2; mild = 3–5; moderate = 6–10; and severe = 11–12