Abstract
The Quick Disabilities of the Arm, Shoulder and Hand Questionnaire and Patient Rated Wrist and Hand Evaluation are two outcome measures used commonly in hand surgery. We evaluated the structural validity of these two outcome measures using item response theory and then developed a common scale that both outcome scores could be mapped to. Factor analysis found that both outcome measures assess the same two health constructs: ‘Pain’ and ‘Motor Function’. We developed two separate common scales for both subscales. Frequency density plots and Bland–Altman analysis suggested that these can be used to compare the scores of one instrument to the other. We present a look-up table allowing readers to map sum-scores from these outcome measures onto the common scales.
Keywords
Get full access to this article
View all access options for this article.
References
Supplementary Material
Please find the following supplemental material available below.
For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.
For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.
