Cross-Cultural Adaptation and Determination of the Validity and Reliability of the Persian Version of the Patient-Rated Tennis Elbow Evaluation (PRTEE) Questionnaire in Iranian Tennis Players

Background and Objectives: The objective of this study was to evaluate the cross-cultural adaptation of the Persian version of the Patient-Rated Tennis Elbow Evaluation (PRTEE) in Iranian tennis players with lateral epicondylitis. Materials and Methods: The original version of the PRTEE questionnaire was translated into the Persian language by two bilingual translators in accordance with the instructions provided by Beaton et al. One hundred and two tennis players (64 males and 38 females) suffering from lateral epicondylitis and 40 tennis player with no lateral epicondylitis participated in this study. In order to determine the construct validity, the correlation between the Persian version of the PRTEE and disabilities of the arm, shoulder and hand questionnaire (DASH) were all investigated. The reliability of the questionnaire was determined from two different aspects of the test-retest reliability and internal consistency. Results: There was a high correlation between PRTEE and DASH questionnaires (r = 0.88). The coefficient of Cronbach’s alpha for the total score of the PRTEE questionnaire was 0.96 and the intra-class correlation (ICC) coefficient for the total score was 0.95. There was a significant difference in the scores of patients (M=45.56, SD=20.56) and healthy (M=7.23, SD=5.5) tennis players; (t =17.31, P