doi:10.15403/jgld-558engTursi, A.Brandimarte, G.Di Mario, F.Lanas, A.Scarpignato, C.Bafutto, M.Barbara, G.Bassotti, G.Binda, G. A.Biondi, A.Biondo, S.Cassieri, C.Crucitti, A.Dumitrascu, D. L.Elisei, W.Escalante, R.Herszènyi, L.Kruis, W.Kupcinskas, J.Lahat, A.Lecca, P. G.Maconi, G.Malfertheiner, P.Mazzari, A.Mearìn, F.Milosavljevic, T.Nardone, G.Chavez De Oliveira, E.Papa, A.Papagrigoriadis, S.Pera, M.Persiani, R.Picchio, M.Regula, J.Štimac, D.Stollman, N.Strate, L. L.Walker, M. M.The DICA Endoscopic Classification for Diverticular Disease of the Colon Shows a Significant Interobserver Agreement among Community Endoscopists: an International StudyART-2020-116566BACKGROUND AND AIMS: The Diverticular Inflammation and Complication Assessment (DICA) endoscopic classification of diverticulosis and diverticular disease (DD) is currently available. It scores severity of the disease as DICA 1, DICA 2 and DICA 3. Our aim was to assess the agreement on this classification in an international endoscopists community setting. METHODS: A total of 96 doctors (82.9% endoscopists) independently scored a set of DD endoscopic videos. The percentages of overall agreement on DICA score and a free-marginal multirater kappa (¿) coefficient were reported as statistical measures of interrater agreement. RESULTS: Overall agreement in using DICA was 91.8% with a free-marginal kappa of 88% (95% CI 80-95). The overall agreement levels were: DICA 1, 85.2%; DICA 2, 96.5%; DICA 3, 99.5%. The free marginal ¿ was: DICA 1 = 0.753, DICA 2 = 0.958, DICA 3 = 0.919. The agreement about the main endoscopic items was 83.4% (k 67%) for diverticular extension, 62.6% (k 65%) for number of diverticula for each district, 86.8% (k 82%) for presence of inflammation, and 98.5 (k 98%) for presence of complications. CONCLUSIONS: The overall interrater agreement in this study ranges from good to very good. DICA score is a simple and reproducible endoscopic scoring system for diverticulosis and DD.2020http://zaguan.unizar.es/record/15218310.15403/jgld-558http://zaguan.unizar.es/record/152183oai:zaguan.unizar.es:152183Journal of Gastrointestinal and Liver Diseases 28, supl. 4 (2020), 39-44byhttps://creativecommons.org/licenses/by/4.0/deed.esinfo:eu-repo/semantics/openAccess