Travis 2013.

Methods	Videos were retrospectively obtained from a library of videos from clinical trials of patients with active UC
Data	57 sigmoidoscopic videos, stratified based on disease severity, were assessed by 25 investigators The investigators read 28 videos each (4 of which were duplicates, so that intra‐rater reliability could be assessed)
Comparisons	Visual Analogue Scale
Outcomes	Inter‐rater reliability, intra‐rater reliability, construct validity (see Table 3 and Table 5)
Notes	Endoscopic scoring index evaluated: UCEIS
Risk of bias
Item	Authors' judgement	Description
Blinding?	Yes	Investigators were assigned videos randomly and were blinded to clinical details of patients
Independent Observation?	Yes	Investigators assessed videos independently