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This paper estimates the incremental hospital resource consumption associated with treating selected adverse events experienced by Medicare beneficiaries (MBs) undergoing total hip arthroplasty (THA). This retrospective study, using the Medicare Provider Analysis and Review file, identified 174,167 MBs who underwent THA in 2013. Overall, 20.16% of MB undergoing THA experienced at least one adverse event. MB experiencing any adverse event consumed significantly higher hospital cost ($3429) and had longer length of stays (1.0 day). The risk-adjusted incremental cost of treating adverse events ranged from a high of $27,116 (pneumonia) to a low of $2626 (hemorrhage or post-operative shock requiring transfusion). Most major adverse events occurred infrequently, however when adverse events occurred, they add substantially to the hospital resource costs of treating MB., (Copyright © 2016 Elsevier Inc. All rights reserved.)

This paper estimates the incremental hospital resource consumption associated with treating selected adverse events experienced by Medicare beneficiaries undergoing TKA. This retrospective study, using the Medicare Provider Analysis and Review file, identified 353,650 Medicare beneficiaries who underwent a primary TKA during 2011. Overall, 11.82% of Medicare beneficiaries (MBs) undergoing TKA experienced at least one of the study's adverse events. MBs experiencing any adverse event consumed significantly more unadjusted hospital resources ($3110 cost) and had longer stays (1.3 days). The risk-adjusting incremental cost of treating adverse events ranged between $30,902 (pneumonia) and $2167 (hemorrhage or post-operative shock requiring transfusion). Most major adverse events occur infrequently; however when an adverse event occurs following TKA, it adds substantially to hospital costs., (Copyright © 2014 Elsevier Inc. All rights reserved.)