Reliability, discriminative accuracy, and an exploration of response shift as measured using the satisfaction and Recovery Index over 12 months from musculoskeletal trauma.

Musculoskeletal Science & Practice
Shirin Modarresi, David M Walton

Abstract

The Satisfaction and Recovery Index (SRI) is an importance-weighted health-related satisfaction tool intended to be a patient-centric means to capture both the process and state of recovery following musculoskeletal trauma. The purpose of this study was to explore measurement invariance, responsiveness, discriminative accuracy, and potential response shift identifiable within the SRI. Participants were 111 adults with acute musculoskeletal trauma. Data were collected at baseline, and again at 1, 2, 3, 6, and 12 months post-injury. Other tools used were the Brief Pain Inventory (BPI) and a Global Rating of Change scale. 1-month test-retest reliability (ICC2,1), responsiveness (standardized response mean in stable vs. changed participants), discriminative accuracy (area under the curve for differentiating between recovered and non-recovered), and response shift (change in mean importance scores over the 12-month period) were explored. All but the final analysis were compared against the BPI. Test-retest reliability was excellent across all metrics (ICC2,1 = 0.83 to 0.88). Responsiveness was greatest for the weighted SRI (SRM = 0.36) with MDC95 of 13.7%. All tools showed significant ability to discriminate between participants nom...Continue Reading

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