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European Surveillance of Antimicrobial Consumption (ESAC): quality indicators for outpatient antibiotic use in Europe
  1. Samuel Coenen1,
  2. Matus Ferech2,
  3. Flora M Haaijer-Ruskamp3,
  4. Chris C Butler4,
  5. Robert H Vander Stichele5,
  6. Theo J M Verheij6,
  7. Dominique L Monnet7,
  8. Paul Little8,
  9. Herman Goossens2
  1. 1
    University of Antwerp, Department of General Practice, Antwerp, Belgium
  2. 2
    University of Antwerp, Laboratory of Microbiology, Antwerp, Belgium
  3. 3
    University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
  4. 4
    School of Medicine, Cardiff University, Cardiff, UK
  5. 5
    Heymans Institute of Pharmacology, Medical School, University of Ghent, Ghent, Belgium
  6. 6
    Julius Center for Health Sciences and Primary Care, UMC Utrecht, Utrecht, The Netherlands
  7. 7
    National Center for Antimicrobials and Infection Control, Statens Serum Institut, Copenhagen, Denmark
  8. 8
    University of Southampton, Community Clinical Sciences, Southampton, UK
  1. Samuel Coenen, University of Antwerp—Campus Drie Eiken, Department of General Practice, Universiteitsplein 1, 2610 Antwerp, Belgium; samuel.coenen{at}ua.ac.be

Abstract

Background and objective: Indicators to measure the quality of healthcare are increasingly used by healthcare professionals and policy makers. In the context of increasing antimicrobial resistance, this study aimed to develop valid drug-specific quality indicators for outpatient antibiotic use in Europe, derived from European Surveillance of Antimicrobial Consumption (ESAC) data.

Methods: 27 experts (15 countries), in a European Science Foundation workshop, built on the expertise within the European Drug Utilisation Research Group, the General Practice Respiratory Infections Network, the ESCMID Study Group on Primary Care Topics, the Belgian Antibiotic Policy Coordination Committee, the World Health Organization, ESAC, and other experts. A set of proposed indicators was developed using 1997–2003 ESAC data. Participants scored the relevance of each indicator to reducing antimicrobial resistance, patient health benefit, cost effectiveness and public health policy makers (scale: 1 (completely disagree) to 9 (completely agree)). The scores were processed according to the UCLA-RAND appropriateness method. Indicators were judged relevant if the median score was not in the 1–6 interval and if there was consensus (number of scores within the 1–3 interval was fewer than one third of the panel). From the relevant indicators providing overlapping information, the one with the highest scores was selected for the final set of quality indicators—values were updated with 2004 ESAC data.

Results: 22 participants (12 countries) completed scoring of a set of 22 proposed indicators. Nine were rated as relevant antibiotic prescribing indicators on all four dimensions; five were rated as relevant if only relevance to reducing antimicrobial resistance and public health policy makers was taken into account. A final set of 12 indicators was selected.

Conclusion: 12 of the proposed ESAC-based quality indicators for outpatient antibiotic use in Europe have face validity and are potentially applicable. These indicators could be used to better describe antibiotic use in ambulatory care and assess the quality of national antibiotic prescribing patterns in Europe.

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Footnotes

  • Funding: The ESAC project was granted by DG/SANCO of the European Commission (2001/SID/136). The information contained in this publication does not necessarily reflect the opinion or the position of the European Commission. The workshop was co-financed by ESF, DG/SANCO, WHO Europe and the University of Antwerp. SC carried out this work as a postdoctoral fellow of the Research Foundation-Flanders.

  • Competing interests: None.

  • Abbreviations:
    ATC
    Anatomic Therapeutic Chemical (classification)
    DDD
    defined daily dose
    DID
    DDD per 1000 inhabitants per day
    ESAC
    European Surveillance of Antimicrobial Consumption
    ESF
    European Science Foundation

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