Samuel 2013.

Methods	Prospective validation study of the UCCIS 50 patients with a spectrum of UC disease activity underwent a video recorded colonoscopy
Data	250 video clips (30 seconds in length) representative of an equal number of colonic segments were graded by 8 investigators (2000 evaluations of 50 patients)
Comparisons	Rachmilewitz Score (clinical) SCCAI (clinical) Patient‐Defined Remission (clinical) (Higgins 2005b) C‐reactive protein albumin hemoglobin platelet count
Outcomes	Criterion validity, construct validity (see Table 4 and Table 5)
Notes	Endoscopic scoring index evaluated: UCCIS
Risk of bias
Item	Authors' judgement	Description
Blinding?	Yes	8 gastroenterologists blindly rated mucosal lesions
Independent Observation?	Yes	Gastroenterologists independently assessed mucosal lesions