Thomas 2009.

Methods	Consecutive UC patients were evaluated using clinical, endoscopic and histological indices in an effort to validate each index Endoscopic activity was assessed independently by 4 specialist gastroenterologists Histological activity was scored by 2 specialist pathologists
Data	91 patients with mild, moderate or severe UC
Comparisons	SCCAI (clinical) Truelove and Richards Score (histologic)
Outcomes	Construct validity (Table 5)
Notes	Endoscopic scoring index evaluated: Baron Score Study published in abstract form only
Risk of bias
Item	Authors' judgement	Description
Blinding?	Unclear	Not adequately described
Independent Observation?	Yes	Endoscopic activity was assessed independently by 4 specialist gastroenterologists