In our Conditions of Use agreement, we ask people not to change the items or the response options on the DASH nor the scoring algorithms. The reason is that we are trying to offer as much as we can about the DASH at no charge to the user. We try to keep you appraised of new studies on the reliability, validity and interpretability of the DASH. A manual is available for your use, through purchase, and we do many presentations about the DASH and its measurement properties. However, to do this work and dissemination, we can only support one version of the DASH. When items are dropped or changed, or the response options are changed, then the measurement properties that we make available are no longer correct. They are only for the full, unaltered DASH, and QuickDASH. If there were several versions of the DASH then the numeric scores of these different versions would not be equivalent. Therefore, we would not be able to compare the numeric scores of these different versions.
