Talstad and Gjone listed criteria for disease activity for a patient with ulcerative colitis. The authors reference the criteria reported by Edwards and Truelove, who used the criteria of Truelove and Witts (see above).
Bowel Movements per day
Disease Activity
1 to 4
mild
5 to 10
moderate
11 or more
severe
Features indicative of severe disease:
(1) fever > 38°C
(2) tachycardia with heart rate > 100 beats per minute