• Mohammad H Ebrahimzadeh, Ali Birjandinejad, Shiva Razi, Mohsen Mardani-Kivi, and Amir Reza Kachooei.
• Associate Professor, Shoulder and Knee Surgeon Director, Orthopedic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
• Iran J Med Sci. 2015 Sep 1;40(5):404-10.

BackgroundOxford shoulder score is a specific 12-item patient-reported tool for evaluation of patients with inflammatory and degenerative disorders of the shoulder. Since its introduction, it has been translated and culturally adapted in some Western and Eastern countries. The aim of this study was to translate the Oxford Shoulder Score (OSS) in Persian and to test its validity and reliability in Persian speaking population in Iran.MethodsOne hundred patients with degenerative or inflammatory shoulder problem participated in the survey in 2012. All patients completed the Persian version of OSS, Persian DASH and the SF-36 for testing validity. Randomly, 37 patients filled out the Persian OSS again three days after the initial visit to assess the reliability of the questionnaire.ResultsCronbach's alpha coefficient was 0.93. The intraclass correlation coefficient was 0.93. In terms of validity, there was a significant correlation between the Persian OSS and DASH and SF-36 scores (P < 0.001).ConclusionThe Persian version of the OSS proved to be a valid, reliable, and reproducible tool as demonstrated by high Cronbach's alpha and Pearson's correlation coefficients. The Persian transcript of OSS is administrable to Persian speaking patients with shoulder condition and it is understandable by them.

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