Polyp Morphology: An Interobserver Evaluation for the Paris Classification Among International Experts View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-01

AUTHORS

Sascha C van Doorn, Y Hazewinkel, James E East, Monique E van Leerdam, Amit Rastogi, Maria Pellisé, Silvia Sanduleanu-Dascalescu, Barbara A J Bastiaansen, Paul Fockens, Evelien Dekker

ABSTRACT

OBJECTIVES: The Paris classification is an international classification system for describing polyp morphology. Thus far, the validity and reproducibility of this classification have not been assessed. We aimed to determine the interobserver agreement for the Paris classification among seven Western expert endoscopists. METHODS: A total of 85 short endoscopic video clips depicting polyps were created and assessed by seven expert endoscopists according to the Paris classification. After a digital training module, the same 85 polyps were assessed again. We calculated the interobserver agreement with a Fleiss kappa and as the proportion of pairwise agreement. RESULTS: The interobserver agreement of the Paris classification among seven experts was moderate with a Fleiss kappa of 0.42 and a mean pairwise agreement of 67%. The proportion of lesions assessed as "flat" by the experts ranged between 13 and 40% (P<0.001). After the digital training, the interobserver agreement did not change (kappa 0.38, pairwise agreement 60%). CONCLUSIONS: Our study is the first to validate the Paris classification for polyp morphology. We demonstrated only a moderate interobserver agreement among international Western experts for this classification system. Our data suggest that, in its current version, the use of this classification system in daily practice is questionable and it is unsuitable for comparative endoscopic research. We therefore suggest introduction of a simplification of the classification system. More... »

PAGES

180

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/ajg.2014.326

DOI

http://dx.doi.org/10.1038/ajg.2014.326

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1045705377

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25331346


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