Web-based system for training and dissemination of a magnification chromoendoscopy classification

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Mario Jorge Dinis Ribeiro (Author) FMUP; Ricardo Cruz Correia (Author) FMUP; Cristina Santos (Author) FMUP; Sonia Fernandes (Author) Other; Ernesto Palhares (Author) Other; Rui Almeida Silva (Author) Other; Pedro Amaro (Author) Other; Miguel Areia (Author) Other; Altamiro Costa Pereira (Author) FMUP; Luis Moreira Dias (Author) Other

Journal

Title: World Journal of Gastroenterology

Vol. 14 No. 9

Pages: 7086-7092

ISSN: 1007-9327

Publisher: Baishideng Publishing Group

Indexing

ISI Web of Knowledge - 7 Citations

ISI Web of Science

Scopus - 9 Citations

Pubmed / Medline

Scientific classification

FOS: Medical and Health sciences > Clinical medicine

Other information

Authenticus ID: P-003-T8E

DOI: 10.3748/wjg.14.7086

Abstract (EN): AIM: To evaluate the use of web-based technologies to assess the learning curve and reassess reproducibility of a simplified version of a classification for gastric magnification chromoendoscopy (MC). METHODS: As part of a multicenter trial, a hybrid approach was taken using a CD-ROM, with 20 films of MC lasting 5 s each and an "autorun" file triggering a local HTML frameset referenced to a remote questionnaire through an Internet connection. Three endoscopists were asked to prospectively and independently classify 10 of these films randomly selected with at least 3 d apart. The answers were centrally stored and returned to participants together with adequate feedback with the right answer. RESULTS: For classification in 3 groups, both intra- [Cohen's kappa (kappa) = 0.79-1.00 to 0.89-1.00] and inter-observer agreement increased from 1st (moderate) to 6th observation (kappa = 0.94). Also, agreement with reference increased in the last observations (0.90, 1.00 and 1.00, for observers A, B and C, respectively). Validity of 100% was obtained by all observers at their 4th observation. When a 4th (sub)group was considered, inter-observer agreement was almost perfect (kappa = 0.92) at 6th observation. The relation with reference clearly improved into is (0.93-1.00) and sensitivity (75%-100%) at their 6th observations. CONCLUSION: This MC classification seems to be easily explainable and learnable as shown by excellent intra- and inter-observer agreement, and improved agreement with reference. A web system such as the one used in this study may be useful for endoscopic or other image based diagnostic procedures with respect to definition, education and dissemination.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7