Table 1.

The grading rule of disease activity index (DAI)

Score	Weight loss (%)	Stool consistency	Blood in stool
0	None	0 = normal	0 = negative
1	1–5%	2 = loose stool	2 = Hemoccult positive
2	6–10%	4 = diarrhea	4 = gross bleeding
3	11–20%
4	>20%