Table 1.

Scoring system for calculating a disease activity index (DAI)

Score	Weight loss	Stool consistency	Blood
0	None	Normal	Negative haemoccult
1	1–5%	Soft but still formed	Weakly positive haemoccult
2	6–10%	Soft	Positive haemoccult
3	11–20%	Very soft; wet	Blood traces in stool visible
4	>20%	Watery diarrhoea	Gross rectal bleeding