ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2025
Antibiotic consumption patterns in acute care hospitals: an integrated analysis using regression modelling combining data from two surveillance systems, Germany, 2022.
Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUNDTo enhance antibiotic stewardship and effectively address antimicrobial resistance (AMR), better understanding of subnational antibiotic consumption patterns is essential.AIMWe aimed to assess antibiotic consumption in Germany using data from 2022 and integrated from two surveillance systems, focusing on regional differences by examining non-university acute care hospitals.METHODSWe used pharmacy dispensing data from 525 regional or local hospitals and 35 university hospitals, covering 46.5 million patient days (PD), nearly half of all occupied bed days nationwide, to calculate antibiotic use densities (AUD) for systemic antibiotics, expressed as World Health Organization (WHO) ATC/DDD (Anatomical Therapeutic Chemical/Defined Daily Dose) per 100 patient days (DDD/100 PD). The analysis primarily focused on consumption patterns in non-university hospitals, assessing key antibiotic groups through mixed-effects regression. For sensitivity analyses, we employed hospital-adapted daily dose definitions.RESULTSPooled AUD for participating non-university hospitals was 51.8 DDD/100 PD, with aminopenicillins/beta-lactamase inhibitors being the most prescribed group. Regression analyses, adjusted for hospital size and ward type/admitting specialty, indicated notable regional variation. We identified statistically significant differences in antibiotic consumption, particularly for beta-lactam antibiotics, fluoroquinolones and tetracyclines. For example, several regions exhibited up to 1.4-fold higher use of first- and second-generation cephalosporins compared with the western reference region.CONCLUSIONThis study highlights substantial regional variation in antibiotic use in German acute care hospitals, underlining the importance of further investigation into influencing factors such as regional guidelines and resistance rates. The methodological approach applied here may serve as a model for other countries interested in analysing regional differences in antibiotic consumption.
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