Naganuma 2010.

Methods	A novel endoscopic scoring index was developed, the Endoscopic Activity Index (EAI) Inpatients and outpatients from a gastroenterology clinic between 13‐71 years with active, moderate to severe UC were eligible to participate
Data	396 patients with UC (454 colonoscopies) The endoscopic score was calculated by a single endoscopist
Comparisons	EAI (endoscopic) Matts Score (endoscopic) Rachmilewitz Endoscopic Score (endoscopic) Lichtiger Index (clinical)
Outcomes	Construct validity (see Table 5)
Notes	Endoscopic scoring indices assessed: EAI, Matts Score, Rachmilewitz Endocopic Score
Risk of bias
Item	Authors' judgement	Description
Blinding?	No	Clinical symptoms and endoscopic videos were assessed
Independent Observation?	Unclear	Not relevant (construct validity)