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- Talk
- 20/09/2022
- UK
Mapping the Oxford Shoulder Score Onto The EQ-5D Utility Index
Description
In this educational presentation, Markos Valsamis discusses the integration of the Oxford Shoulder Score (OSS) with the EQ-5D health utility index, aimed at improving economic evaluations of shoulder replacement surgeries. Valsamis introduces the concept of patient-reported outcome measures, emphasizing the lack of published cost-effectiveness studies on shoulder replacements as highlighted by the National Institute for Health and Care Excellence (NICE) in their 2020 guidelines. He explains that the primary goal of the study was to develop algorithms that could effectively predict EQ-5D scores from the OSS responses, thereby allowing for better assessments of quality-adjusted life years (QALYs). The analysis involved data from four national randomized controlled trials, indicating a solid base of 5,437 paired observations from patients who completed both the OSS and the EQ-5D questionnaires.
The presentation outlines the differences between two mapping models: transfer to utility models and response mapping models, detailing their respective approaches. Meticulous attention is given to the metrics used to measure model performance, such as mean square error, with results indicating that all created models performed comparably to existing algorithms for other joint assessments, like those for hip and knee replacements.
Handling questions from the audience, Valsamis discusses the impact of age and comorbidity on the efficacy of the models. He acknowledges inherent limitations, particularly regarding the role of mental health, since the OSS does not address psychological factors captured by EQ-5D. Valsamis reassures attendees that, despite varying patient backgrounds, the models remain reliable and applicable, ultimately proposing their practical use in clinical settings for predicting patient outcomes following surgical interventions. As the session concludes, he opens the floor for further inquiries, indicating a willingness to address additional concerns from the audience.