Reliability and validity of the Japanese version of the Ocular Surface Disease Index for dry eye disease. Issue 11 (25th November 2019)

• Record Type: Journal Article
• Authors: Midorikawa-Inomata, Akie; Inomata, Takenori; Nojiri, Shuko; Nakamura, Masahiro; Iwagami, Masao; Fujimoto, Keiichi; Okumura, Yuichi; Iwata, Nanami; Eguchi, Atsuko; Hasegawa, Hitomi; Kinouchi, Hikaru; Murakami, Akira; Kobayashi, Hiroyuki
• Is Part Of: BMJ open. Volume 9:Issue 11(2019)
• Publication Date: 2019-11-25
• Subjects: dry eye disease -- ocular surface disease index -- OSDI -- reliability -- validity; Medicine -- Research -- Periodicals; 610.72
• DOI: 10.1136/bmjopen-2019-033940
• Languages: English
• ISSNs: 2044-6055

Abstract

Abstract : Objectives: The Ocular Surface Disease Index (OSDI) questionnaire is widely used to evaluate subjective symptoms of dry eye disease (DED) as a primary diagnostic criterion. This study aimed to develop a Japanese version of the OSDI (J-OSDI) and assess its reliability and validity. Design and setting: Hospital-based cross-sectional observational study. Participants: A total of 209 patients recruited from the Department of Ophthalmology at Juntendo University Hospital. Methods: We translated and culturally adapted the OSDI into Japanese. The J-OSDI was then assessed for internal consistency, reliability and validity. We also evaluated the optimal cut-off value to suspect DED using an area under the receiver operating characteristic curve (AUC) analysis. Primary outcome measures: Internal consistency, test–retest reliability and discriminant validity of the J-OSDI as well as the optimal cut-off value to suspect DED. Results: Of the participants, 152 had DED and 57 did not. The J-OSDI total score showed good internal consistency (Cronbach's alpha=0.884), test–retest reliability (interclass correlation coefficient=0.910) and discriminant validity by known-group comparisons (non-DED, 19.4±16.0; DED, 37.7±22.2; p<0.001). Factor validity was used to confirm three subscales within the J-OSDI according to the original version of the questionnaire. Concurrent validity was assessed by Pearson correlation analysis, and the J-OSDI total score showed a strong positive correlation with the Dry Eye-Related Quality-of-Life Score (γ=0.829). The optimal cut-off value of the J-OSDI total score was 36.3 (AUC=0.744). Conclusions: The J-OSDI was developed and validated in terms of reliability and validity as an effective tool for DED assessment and monitoring in the Japanese population.