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Validation study demonstrates responsiveness of the DASH questionnaire after upper-extremity surgery, indicating a 10-point change reflects minimal clinically important recovery.
The DASH can detect and differentiate small and large changes of disability over time after surgery in patients with upper-extremity musculoskeletal disorders. A 10-point difference in mean DASH score may be considered as a minimal important change. The DASH can show treatment effectiveness after surgery for subacromial impingement and carpal tunnel syndrome. The effect size and standardized response mean may yield substantially differing results.
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Gummesson et al. (2003) studied this question.
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