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Demographics and clinical and economic characteristics of patients receiving total hip arthroplasty with and without muscle atrophy/weakness

Authors Wu N, Chen S, Lee Y, Zhao Y

Received 6 April 2013

Accepted for publication 20 May 2013

Published 25 June 2013 Volume 2013:5 Pages 271—280

DOI https://doi.org/10.2147/CEOR.S46332

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Nin Wu,1 Shih-Yin Chen,1 Yuan-Chi Lee,1 Yang Zhao2

1United BioSource Corporation, Lexington, MA, USA; 2Eli Lilly and Company, Indianapolis, IN, USA

Abstract: This study analyzed administrative claims by a US population with commercial or Medicare supplemental insurance to compare demographics, comorbid medical conditions, and health care utilization and costs among patients undergoing total hip arthroplasty (THA) with and without muscle atrophy/weakness (MAW). Patients were classified into three cohorts: having MAW during the 12 months previous to THA (pre-MAW); having MAW during or over the 12 months after THA (post-MAW); or no MAW claim (no-MAW). In total, 19,607 Medicare and 23,127 commercially insured patients were examined. Controlling for cross-cohort differences, both pre-MAW and post-MAW commercial cohorts had significantly higher total costs ($6,697 and $8,594, in USD respectively) and higher risk of all-cause hospitalization (odds ratios, 1.66 and 1.57, respectively) than the no-MAW cohort (all P < 0.05) during the 1-year follow-up. Similar trends were observed in the Medicare population.

Keywords: total hip arthroplasty, muscle atrophy/weakness, health care costs, health care utilization

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