Bafus BT, Hughes RE, Miller BS, Carpenter JE. Evaluation of utility in shoulder pathology: Correlating the American Shoulder and Elbow Surgeons and Constant scores to the EuroQoL. World J Orthop 2012; 3(3): 20-24 [PMID: 22550620 DOI: 10.5312/wjo.v3.i3.20]
Corresponding Author of This Article
Richard E Hughes, PhD, Laboratory for Optimization and Computation in Orthopaedic Surgery, University of Michigan, 2003 Biomedical Science Research Building, 109 Zina Pitcher Pl, Ann Arbor, MI 48109-2200, United States. rehughes@med.umich.edu
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Brief Article
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World J Orthop. Mar 18, 2012; 3(3): 20-24 Published online Mar 18, 2012. doi: 10.5312/wjo.v3.i3.20
Evaluation of utility in shoulder pathology: Correlating the American Shoulder and Elbow Surgeons and Constant scores to the EuroQoL
Blaine T Bafus, Richard E Hughes, Bruce S Miller, James E Carpenter
Blaine T Bafus, Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, OH 44115-2325, United States
Richard E Hughes, Bruce S Miller, James E Carpenter, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI 48109-2200, United States
Author contributions: Bafus BT, Hughes RE, Carpenter JE and Miller BS were all involved in the conceptualization of project, design of the project and interpretation of the results; all reviewed and approved the final manuscript; Bafus BT collected all of the data, computed descriptive statistics, and wrote the manuscript; Hughes RE performed the correlations and multivariate statistical modeling; Hughes RE also wrote the statistical analysis sections of the manuscript.
Supported by Department of Orthopaedic Surgery, University of Michigan
Correspondence to: Richard E Hughes, PhD, Laboratory for Optimization and Computation in Orthopaedic Surgery, University of Michigan, 2003 Biomedical Science Research Building, 109 Zina Pitcher Pl, Ann Arbor, MI 48109-2200, United States. rehughes@med.umich.edu
Telephone: +1-734-6156410 Fax: +1-734-6470003
Received: November 18, 2011 Revised: January 29, 2012 Accepted: March 3, 2012 Published online: March 18, 2012
Abstract
AIM: To study whether health utility scores can be derived from shoulder-specific scores.
METHODS: Authors investigated two questions: (1) do the American Shoulder and Elbow Surgeons (ASES) score and the Constant score correlate with the EuroQoL (EQ-5D), a measure of health utility? (2) can the ASES and Constant scores be obtained from a complete study sample without bias? Thirty subjects with various shoulder diagnoses completed ASES, Constant, and EQ-5D instruments. Pearson correlations were calculated to assess the associations between EQ-5D score and ASES and Constant scores.
RESULTS: The correlation between EQ-5D score and ASES score was 0.60 (P < 0.001); it was 0.54 for EQ-5D and Constant scores (P < 0.003). A multiple regression model containing ASES score, Constant score, age, and gender failed to adequately predict EQ-5D. Moreover, 25% of patients meeting the inclusion criteria did not complete the ASES questionnaire because they did not feel that specific questions, such as “do usual sport - list” and “throw ball overhand,” applied to them.
CONCLUSION: Authors’ results do not support the use of the ASES and Constant scores in predicting EuroQol health utility values. However, the Constant score was more suitable for this patient population because all patients were able to complete it.
