title: [Scientific collaboration and article citations: practices in medical journals].
abstract: OBJECTIVE
  In order to characterize scientific collaboration the best way is to study co-signature of articles. Two indicators are interesting: number of authors and international character. The objective is to study correlation between these two indicators and citation number.
  
  
  METHODS
  We selected two pharmacy and medicine journals in order to compare practices. We used a sample of about 800 articles published in 2002-2005 for which we collected citations up to 2010. We transformed numeric variables, authors number and citation number, into qualitative variables.
  
  
  RESULTS
  "Authors" and "Citations" variables are not independent.
  
  
  CONCLUSIONS
  Less cited articles are often published by one author or a very small team while international character of articles generally increases citation number. This micro-analysis also allowed us to better understand publication practices.
authors.affiliation: Université de Lyon, Lyon, France. pascal.bador@univ-lyon1.fr
authors.forename: Pascal
authors.initials: P
authors.lastname: Bador
authors.forename: Thierry
authors.initials: T
authors.lastname: Lafouge
mesh_terms: D001319:Authorship; D035843:Biomedical Research / Q000379:methods*; D003299:Cooperative Behavior; D006801:Humans; D008511:Medicine / Q000379:methods / Q000592:standards; D010506:Periodicals as Topic / Q000941:ethics / Q000592:standards; D010604:Pharmacy / Q000379:methods / Q000592:standards; D011364:Professional Practice; D011642:Publications / Q000941:ethics / Q000592:standards*; D011643:Publishing / Q000941:ethics / Q000592:standards*; D014956:Writing / Q000592:standards