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improvement and estimate the proportion of underreporting of SSI. Validation results are reported openly together with SSI rates in Switzerland to help the public appraise the results of SSI rates in individual hospitals. However, the efforts and cost of validation are substantial; therefore, more sensitive and efficient methods for the detection of false-negative outcome measures are urgently needed. Future research should focus on the association between poor performance in process and structure measurement and reported SSI rates.
acknowledgments
We would like to thank Marylaure Dubouloz, Katja Di Salvo, and all partici- pating hospitals for data collection and collaboration. These data were collected in collaboration with the Swiss National Association for the Development of Quality in Hospitals and Clinics (ANQ). Financial support: No financial support was provided relevant to this article. Potential conflicts of interest: All authors report no conflicts of interest
relevant to this article. Address correspondence to Stefan Kuster, MD, MSc, Division of Infectious
Diseases and Hospital Epidemiology, University Hospital Zurich, Raemistrasse 100 / HAL14 D6 8091 Zürich, Switzerland (
stefan.kuster@usz.ch).
supplementary material
To view supplementary material for this article, please visit
https://doi.org/10.1017/ice.2017.169.
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