Quantifying optimal AWaRe antibiotic use patterns in hospitals with a new benchmarking tool applied to cross-sectional point prevalence survey data from 10 countries

Background: Both over- and under-antibiotic use pose major global health challenges, yet there is no consensus on how to quantify deviations from optimal prescribing or set evidence-based targets. We developed a benchmarking tool for inpatient antibiotic use and evaluated its application in 10 countries. Methods: We developed decision-tree models to estimate expected empiric antibiotic use for 11 indications, based on the WHO AWaRe book for two age groups: 28 days to 12 years and >12 years. We parameterised the models using country-specific antimicrobial resistance estimates in the 10 countrie

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