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Table 1 Clinical Activity Index (CAI) according to Rachmilewitz.

From: Transcript levels of different cytokines and chemokines correlate with clinical and endoscopic activity in ulcerative colitis

Number of stools weekly  
< 18 0
18–35 1
36–60 2
> 60 3
Blood in stools (based on weekly average)  
None 0
Little 1
A lot 2
Investigator's global assessment of symptomatic state  
Good 0
Average 1
Poor 2
Very poor 3
Abdominal pain/cramps  
None 0
Mild 1
Moderate 2
Severe 3
Temperature due to colitis  
< 38°C 0
> 38°C 1
Extraintestinal manifestations  
Iritis 3
Erythema nodosum 3
Arthritis 3
Laboratory Findings  
Sedimentation rate > 50 mm in 1st hour 1
Sedimentation rate > 100 mm in 1st hour 2
Haemoglobin < 100 g/L 4