Numerical modification of the Los Angeles classification of gastroesophageal reflux disease fails to decrease observer variation
| Autor: | Naoko Mimura, Kyoko Ino, Naoko Oshimoto, Keiko Minashi, Masahumi Mizuide, Yoichi Kon, Munetoshi Toki, Tatsuya Higuchi, Kazuma Kikuchi, Masatomo Mori, Tohko Shirota, Masaki Maeda, Sayaka Sugimoto, Tsuneo Ohwada, Motoyasu Kusano, Osamu Kawamura, Yasuyuki Shimoyama |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Digestive Endoscopy. 16:9-11 |
| ISSN: | 1443-1661 0915-5635 |
| Popis: | Background: We previously reported that a new endoscopic classification of gastroesophageal reflux disease, the Los Angeles classification, showed considerable observer variation depending on the experience of the endoscopist. In the present study, we evaluated some modifications of the classification to determine whether we could decrease observer variation. Methods: Fifty endoscopic photographs, each showing four images of the squamo-columnar junction, were prospectively obtained from 50 consecutive patients with gastroesophageal reflux disease. Two groups of eight endoscopists divided by their endoscopic experience, group 1 (100–500 procedures) and group 2 (more than 500 procedures), assessed the photographs using classifications with the following modifications: (i) addition of grade O to describe healed mucosal breaks and setting grade B as more than 5 mm or 10 mm; or (ii) addition of grade O and setting grade D as 75–99% or 100% circumferential. Results: Changing the definition of grade B or grade D did not increase the kappa values for either group of observers. Conclusions: These modifications of the Los Angeles classification were unable to decrease observer variation. |
| Databáze: | OpenAIRE |
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