Evaluation of inflammatory activity in Crohn’s disease and ulcerative colitis

Table 1 Crohn’s disease activity index items and weighting factors

Item (daily sum per week)
Number of liquid or very soft stools
Abdominal pain score in one week (rating, 0-3)
General well-being (rating, 1-4)
Sum of physical findings per week
Arthritis/arthralgia
Mucocutaneous lesions (e.g., erythema nodosum, aphthous ulcers)
Iritis/uveiti
Anal disease (fissure, fistula, etc.)
External fistula (enterocutaneous, vesicle, vaginal, etc.)
Fever over 37.8 °C
Antidiarrheal use (e.g., diphenoxylate)
Abdominal mass (no = 0, equivocal = 2, yes = 5)
47 minus hematocrit (males) or 42 minus hematocrit (females)
1-x (1-body weight divided by a standard weight)