Validación de la versión en español de la escala de función del miembro superior abreviada: Quick Dash

Background: aim of the study was to validate the short version of the Disabilities of the Arm, Shoulder and Hand questionnaire (QuickDASH) in Spanish by testing reliability, consistency, and validity.
Materials and methods: A total of 394 DASH questionnaires, from 298 participants of a previous study, were tested for reliability, consistency, accuracy, validity and responsiveness to change.
Results: Reliability, measured by Lin concordance coefficient was 0.8, 95% CI: 0.67 to 0.93. Cross-sectional precision was estimated with a 95% confidence interval as 12.72, and longitudinal precision (minimum detectable change) was determined as 20 points. Satisfactory values regarding ability to detect response to change and validity were obtained. These tests showed comparable performance between QuickDASH and DASH and validated in Spanish.
Discussion: The shortened version of the scale lost both cross-sectional and longitudinal precision, due to the decrease in internal consistency and stability in the sample studied. As it retained the ability to discriminate and detect change, these results enable it to be recommended for use in the clinical and research setting.