Danish version of the Patient-Rated Wrist/Hand Evaluation questionnaire: Translation, cross-cultural adaptation, test–retest reliability and construct validity

Abstract

Introduction In Denmark, there is a growing need for valid, reliable and standardized patient-rated outcome measures for use in clinical practice and research. The Patient-Rated Wrist/Hand Evaluation (PRWHE) is a self-reported assessment of hand-related disorders that measures pain and functional difficulties in activities of daily living. The purpose of this study was to: (1) translate and cross-culturally adapt the PRWHE into Danish and (2) assess the reliability and construct validity of the Danish version in patients with hand-related disorders. Methods The PRWHE was translated and cross-culturally adapted into Danish using the dual-panel approach. A total of 97 patients with diverse hand-related disorders and a mean age of 52.6 years (SD 15.2) participated in the psychometric testing. They were assessed on two occasions. Test–retest reliability was assessed using the Intraclass Correlation Coefficient (ICC2.1) to assess test–retest, Cronbach’s alpha to assess internal consistency and a Bland–Altman plot to estimate measurement error. Construct validity was investigated by evaluating the relationship between the Danish PRWHE (PRWHE-DK) and the Danish validated version of the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH). Results Psychometric testing demonstrated an excellent test–retest reliability (ICC2.1 = 0.94) and internal consistency (alpha = 0.96). A systematic error of 1.5 and a measurement error of ± 16.1 were found. Furthermore, a strong correlation was found between PRWHE-DK and DASH ( r = 0.71). Conclusions The PRWHE-DK is a reliable, valid instrument for patients with different kinds of hand-related disorders, and can be used in clinical practice and multi-cultural research studies to measure pain and functional disability.