Crohn's Disease Activity Index (CDAI)

Sum Factor Sub Total
A. Liquid stools
(cumulative total over the last 7 days)
Number of liquid or soft stools over the last 7 days
  sum x 2  
B. Abdominal pain
(cumulative total over the last 7 days)
Daily assesment
None = 0; Intermediate = 1 or 2; Severe = 3
  sum x 5  
C. General well being
(cumulative total over the last 7 days)
Daily assesment
Well = 0; Intermediate = 1, 2 or 3; Terrible = 4
  sum x 7  
D. Extra-intestinal
(Select any or all symptoms you are having)
Skin/mouth lesions
Peri-anal disease
Other fistula
Fever >37.8°C (in the last week)
  score x 20  
E. Please tick if you are taking lomotil,
loperamide or opiates for diarrhoea
(eg Lomotil)   value x 30  
F. Abdominal mass None (0) Questionable (2) Definite (5)   value x 10  
G. Enter your current Haematocrit (Hct).
Skip this section if your
current Haematocrit is unknown
For male, (47 - Hct).
For female, (42 - Hct)
  value x 6  
H. Weight
(Maximum deduction of -10 for overweight patients)
Note: Skip this section if
Weight changes related to Crohn's are unknown.
Current body weight kg
Standard body weight kg
100 x (1 - (current/standard))  

The calculators allow you to enter patient specific information to calculate a simple score. All information is provided for educational purposes only. This information is not intended to replace clinical judgement. All calculations must be rechecked and should not be used alone to guide patient care. The user assumes sole responsibility for any decisions or action taken based on the information contained here.