Table 10.

Definitions of EI for CD

Index	Definition
Crohn’s Disease Endoscopic Index of Severity (CDEIS)
Remission	No ulcer [5, 127], ≤ 2 with isolated ileitis [127,128] < 3 [5], < 4 [77], ≤ 4 [73, 126, 127], ≤ 4 for patients with isolated ileitis, < 6 [5, 128]
Mucosal healing	absence of mucosal ulceration [5, 108], < 3 [5]
Response	> 50% decrease [5, 127, 128]
Simple Endoscopic Score for Crohn’s Disease (SES-CD)
Remission	Ulcer sub-score = 0 (including aphthous ulcerations) [5], < 1 [5], < 2 [102], < 3 [5, 108], < 4 [5], ≦4 and ΔSES-CD≧2 [108], < 5 [5], < 6 [5]
Response	> 50% decrease [5]
Rutgeerts Score
Remission	≤ 2 [24]

EI endoscopic index, CD Crohn’s disease