Psychometric Properties of the Persian Version of the Patient Rated Wrist Evaluation

Abstract

Background: The patient-rated wrist evaluation (PRWE) score is one of the most common clinical instruments used<br />as an outcome measurement tool for distal radius fractures and other upper extremity conditions. The purpose of this<br />study was to translate the PRWE into its Persian version and to evaluate its validity and reliability in patients with upper<br />extremity conditions.<br />Methods: One hundred and fourthly one adult patients with upper extremity conditions participated in this ethical board<br />approved study from August 2015 to May 2016. After translating the original version of the PRWE into Persian, all<br />patients filled out the PRWE in addition to the VAS (Visual analogue scale) and DASH questionnaires. For evaluating<br />reliability, after three days the researchers called back some of the patients who did not receive treatment or any<br />changes in symptoms and asked them to complete the PRWE retest (104 patients).<br />Results: Cronbach's alpha was calculated as high as 0.934, implying very reliable internal consistency. After each item<br />deletion, the Cronbach's alpha was still constant (range: 0.926 to 0.936). Intraclass correlation coefficient was 0.952<br />and this showed excellent test-retest reliability. The correlation coefficient between the PRWE and DASH scores was<br />strong. Multivariable analysis showed an association between the PRWE and years educated.<br />Conclusion: Our study has shown that the Persian version of the PRWE is valid and reliable for patients with upper<br />extremity conditions.