Table 1. UC-Disease Activity Index.

Subscale	Score
Stool frequency score	0: Normal (normal indicates healthy state or maintained remission state of the subject)
	1: 1–2 Stools >normal
	2: 3–4 Stools >normal
	3: ≥5 Stools >normal
Rectal bleeding score	0: None
	1: Streaks of blood in stool
	2: Obvious blood in stool
	3: Mostly blood in stool
Sigmoidoscopy score	0: Normal
	1: Mild (erythema, reduced vascular pattern, mild friability)
	2: Moderate (marked erythema, lack of vascular pattern, friability, erosion)
	3: Severe (spontaneous bleeding, ulceration)
PGA score	0: Normal
	1: Mild
	2: Moderate
	3: Severe

The mean score of daily stool frequency and rectal bleeding for 3 days before each visit were calculated.

PGA, physician's global assessment.