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What Is Nosocomial? Large Variation in Hospital Choice of Numerators and Denominators Affects Rates of Hospital-Onset Methicillin-Resistant Staphylococcus aureus

We calculated hospital-onset methicillin-resistant Staphylococcus aureus (HO-MRSA) rates for Orange County, California, hospitals using survey and state data. Numerators were variably defined as HO-MRSA occurring more than 48 hours (37%), more than 2 days (30%), and more than 3 days (33%) postadmiss...

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Bibliographic Details
Published in:Infection control and hospital epidemiology 2012-11, Vol.33 (11), p.1166-1169
Main Authors: DATTA, Rupak, KUO KING, Melissa, KIM, Diane, NGUYEN, Christopher, ELKINS, Kristen, GOMBOSEV, Adrijana, AVERY, Taliser R, MEYERS, Hildy, CHEUNG, Michele, HUANG, Susan S
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Language:English
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Summary:We calculated hospital-onset methicillin-resistant Staphylococcus aureus (HO-MRSA) rates for Orange County, California, hospitals using survey and state data. Numerators were variably defined as HO-MRSA occurring more than 48 hours (37%), more than 2 days (30%), and more than 3 days (33%) postadmission. Survey-reported denominators differed from state-reported patient-days. Numerator and denominator choices substantially impacted HO-MRSA rates.
ISSN:0899-823X
1559-6834
DOI:10.1086/668025