Descriptor | Response (%) | κ | |||||
1 | 2 | 3 | 4 | 5 | Standard | Weighted | |
Vascular pattern | 11.7 | 6.8 | 21.4 | 8.6 | 51.4 | 0.34 | 0.42 |
Mucosal erythema | 15.6 | 11.1 | 36.5 | 15.7 | 21.1 | 0.25 | 0.35 |
Mucosal surface | 18.9 | 12.5 | 31.6 | 11.7 | 25.2 | 0.26 | 0.34 |
Mucosal oedema | 16.5 | 12.3 | 25.7 | 12.8 | 32.7 | 0.23 | 0.31 |
Mucopus | 37.8 | 13.3 | 27.6 | 8.7 | 12.5 | 0.32 | 0.40 |
Bleeding | 41.9 | 29.7 | 14.8 | 9.0 | 4.6 | 0.29 | 0.37 |
Incidental friability | 30.2 | 31.5 | 21.8 | 9.7 | 6.9 | 0.30 | 0.40 |
Contact friability (CFT) | 25.0 | 12.8 | 29.6 | 7.8 | 24.7 | 0.23 | 0.30 |
Erosions and ulcers | 37.1 | 27.1 | 24.8 | 11.0 | – | 0.36 | 0.45 |
Extent of erosions and ulcers | 36.2 | 21.9 | 21.3 | 20.6 | – | 0.32 | 0.42 |
Based on a total of 630 assessments of 60 videos: 21 per investigator with 19 core videos (15 representing Mayo Clinic strata 0–11, two to three per stratum, 2 normal, 2 severe) and two CFT+ videos (representing Mayo Clinic strata 1–11). ‘Response’ for each descriptor refers to the percentage of responses across all assessments. ‘Descriptor’ refers to the descriptive term used for endoscopic assessment (table 1). Columns 1–5 represent levels on the Likert scale of severity for each item. Erosions and ulcers and extent of erosion and ulcers items had four response levels on the Likert scale; all other items had five levels.
CFT, Contact Friability Test.