The patient-rated tennis elbow evaluation questionnaire was successfully translated to Korean

Introduction: Lateral epicondylitis is a common tendinopathy of the elbow. An adequately validated ques-tionnaire is essential to compare the various treatment options, because there is still controversy regard-ing the best treatment for lateral epicondylitis. Purpose of the study: The patient-rated tennis elbow evaluation (PRTEE) was introduced to measure the degree of symptoms and the limitation of function in these patients. This English questionnaire was pre-viously translated into several languages and validated; however, it has not been translated into Korean. The aim of this study was to translate and cross-culturally adapt the PRTEE questionnaire into Korean, and to assess the reliability and validity of the translated questionnaire.Methods: Eighty-three patients were asked to complete the Korean version of the PRTEE and other ques-tionnaires related to the upper extremity or to the general health condition (the Disabilities of Arm, Shoulder, and Hand questionnaire, Short Form-12, and EQ-5D). The PRTEE responses were recorded twice to evaluate test-retest reliability. Internal consistency, test-retest reliability, concurrent validity, and ceil-ing and flooring effects were evaluated.Results: The Korean version of the PRTEE showed high internal consistency (Cronbach's alpha = 0.968). The overall test-retest reliability was good (intra-class correlation score = 0.94). High correlation effi-ciencies between the PRTEE and other questionnaires were observed, supporting high concurrent validity (Spearman's correlation = 0.83 for the Disabilities of Arm, Shoulder, and Hand questionnaire;-0.73 for Short Form-12; and-0.57 for EQ-5D). Ceiling and floor effects were not observed on this test. Conclusion: We successfully translated the PRTEE into the Korean language; this version of the PRTEE showed good reliability and construct validity in Korean-speaking patients with lateral epicondylitis.(c) 2021 Elsevier Inc. All rights reserved.

Automated summary

The purpose of this study was to translate and cross-culturally adapt the PRTEE questionnaire into Korean and evaluate its reliability and validity. The Korean version of the PRTEE showed good internal consistency and test-retest reliability, as well as high correlation with other related questionnaires. The results demonstrate that the translated PRTEE questionnaire has good reliability and construct validity in Korean-speaking patients with lateral epicondylitis.