Infection Control & Hospital Epidemiology
been underestimated.19,33 Due to data limitations, we were unable to directly track patients across time or to obtain revision rates; thus, we estimated a revision rate from Medicare claims data for all procedures, regardless of payer.22 Also, data regarding SSIs resulting from a revision arthroplasty can be difficult to obtain. NHSNdefinitions state that if several procedures are performed on different dates prior to an infection, the SSI is attributed to the most recent procedure prior to the infection date. Additionally, if evi- dence of an infection is present at the time of the procedure, an SSI will be attributed to that procedure.21 Despite low and constant rates, this analysis projected an
increased SSI burden in the years 2020 through 2030 from hip and knee arthroplasties. Subsequent hospital and Medicare costs may increase by millions of dollars due to SSIs following arthroplasty and the growing population over the age of 65. Achieving SSI prevention goals may have a substantial impact on reducing HAI burden.
Supplementary material. To view supplementary material for this article, please visit
https://doi.org/10.1017/ice.2018.184
Acknowledgments. Financial support. No financial support was provided relevant to this article.
Conflicts of interest. All authors report no conflicts of interest relevant to this article.
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