6-Point and Partial Mayo Scoring System for Evaluating the Activity of Ulcerative Colitis

The original Mayo score for ulcerative colitis activity is based on 4 parameters. Two subsets are sometimes used, both without endoscopic findings.

Parameters for the original Mayo score:

(1) stool frequency

(2) rectal bleeding

(3) endoscopic findings

(4) physician's global assessment

Parameters for the 9-point partial Mayo Score:

(1) stool frequency

(2) rectal bleeding

(3) physician's global assessment

Parameters for the 6-point partial Mayo Score:

(1) stool frequency

(2) rectal bleeding

Parameter	Finding	Points
stool frequency	not increased (normal for patient)	0
	1 to 2 stools per day more than normal	1
	3 to 4 stools per day more than normal	2
	>= 5 stools per day more than normal	3
rectal bleeding	none	0
	streaks of blood with stool less than half of the time	1
	obvious blood with stool most of the time	2
	blood only passed	3
physician's global assessment	normal	0
	mild activity	1
	moderate activity	2
	severe activity	3

total score =

= SUM(points for included parameters)

Interpretation:

• minimum score: 0

• maximum partial score: 9

• maximum 6-point score: 6

• The higher the score the more severe the disease.

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