title: European Surveillance of Antimicrobial Consumption (ESAC): outpatient cephalosporin use in Europe.
abstract: BACKGROUND
  Data on outpatient cephalosporin use in Europe were collected from 25 countries within the ESAC project, funded by DG SANCO of the European Commission, using the WHO ATC/DDD methodology.
  
  
  METHODS
  For the period 1997-2003, data on outpatient use of systemic cephalosporins aggregated at the level of the active substance were collected and expressed in DDD (WHO, version 2004) per 1000 inhabitants per day (DID). Use was analysed in detail, using the new ATC codes J01DB, J01DC, J01DD and J01DE, introduced in the 2005 issue of the WHO ATC index and assigned to the four cephalosporin generations.
  
  
  RESULTS
  Total outpatient cephalosporin use in 2003 varied by a factor of 270 between the country with the highest (6.18 DID in Greece) and lowest (0.02 DID in Denmark) use. First-, second- and third-generation cephalosporins were used most in 6, 16 and 3 countries, respectively. We observed fourth-generation use (mainly cefepime) in ambulatory care in 11 countries. From 1997 to 2003 cephalosporin use decreased in 13 countries, in France by more than 1 DID. A relative increase of second-generation (mainly cefuroxime) or third-generation use (mainly cefpodoxime or cefixime) by more than 10% in 12 countries coincided with an equally large decrease of first-generation use in eight countries (mainly cefadroxil, cefalexin or cefatrizine). In six countries, first-generation use increased, second-generation use decreased or both occurred.
  
  
  CONCLUSIONS
  The new ATC codes allow a more detailed description of outpatient cephalosporin use. The variation in antibiotic use in Europe is most extreme for this class of antibiotics, suggesting that in many countries in Europe these antibiotics are prescribed inappropriately.
authors.affiliation: Department of General Practice, University of Antwerp Antwerp, Belgium. samuel.coenen@ua.ac.be
authors.forename: Samuel
authors.initials: S
authors.lastname: Coenen
authors.forename: Matus
authors.initials: M
authors.lastname: Ferech
authors.forename: Katerina
authors.initials: K
authors.lastname: Dvorakova
authors.forename: Erik
authors.initials: E
authors.lastname: Hendrickx
authors.forename: Carl
authors.initials: C
authors.lastname: Suetens
authors.forename: Herman
authors.initials: H
authors.lastname: Goossens
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D001424:Bacterial Infections / Q000188:drug therapy*; D002511:Cephalosporins / Q000627:therapeutic use*; D004363:Drug Utilization / Q000706:statistics & numerical data* / Q000639:trends; D005060:Europe; D006801:Humans; D010045:Outpatients
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins