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Criterion Validation of the Rate of Recovery, a Single Alphanumeric Measure, in Patients with Shoulder Pain.

Authors: O'Halloran B, Wright A, Cook CE

The aim of this study was to identify the minimal clinically important threshold score for rate of recovery (RoR) using the Patient Acceptable Symptom State (PASS) as an anchor measure, and to measure the association of the RoR with the raw and percentage change scores of the QuickDASH and the Numeric Pain Rating Scale (NPRS). The authors concluded that patients reporting greater than or equal to 87% on RoR are likely to have met the Patient Acceptable Symptom State. Although statistically significant, the lack of strong association between RoR and change scores for the NPRS and QuickDASH suggests that the measures capture different constructs.

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