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

< 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