title: Externalities and article citations: experience of a national public health journal (Gaceta Sanitaria).
abstract: OBJECTIVE
  The purpose of the study was to analyze the determinants of citations such as publication year, article type, article topic, article selected for a press release, number of articles previously published by the corresponding author, and publication language in a Spanish journal of public health.
  
  
  METHODS
  Observational study including all articles published in Gaceta Sanitaria during 2007-2011. We retrieved the number of citations from the ISI Web of Knowledge database in June 2013 and also information on other variables such as number of articles published by the corresponding author in the previous 5 years (searched through PubMed), selection for a press release, publication language, article type and topic, and others.
  
  
  RESULTS
  We included 542 articles. Of these, 62.5% were cited in the period considered. We observed an increased odds ratio of citations for articles selected for a press release and also with the number of articles published previously by the corresponding author. Articles published in English do not seem to increase their citations.
  
  
  CONCLUSIONS
  Certain externalities such as number of articles published by the corresponding author and being selected for a press release seem to influence the number of citations in national journals.
authors.affiliation: Department of Preventive Medicine and Public Health, University of Santiago de Compostela, Santiago de Compostela, Spain; CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain. Electronic address: alberto.ruano@usc.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Ruano-Ravina
authors.affiliation: CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain; Public Health Research Group, University of Alicante, Alicante, Spain.
authors.forename: Carlos
authors.initials: C
authors.lastname: Álvarez-Dardet
authors.affiliation: Subdirectorate-General for Health Promotion and Prevention, Madrid Regional Health Authority, Madrid, Spain.
authors.forename: M Felicitas
authors.initials: MF
authors.lastname: Domínguez-Berjón
authors.affiliation: Tobacco Control Unit, Institut Català d'Oncologia, Hospitalet de Llobregat, Spain; Department of Clinical Sciences, School of Medicine, Campus de Bellvitge, Universitat de Barcelona, Hospitalet de Llobregat, Spain.
authors.forename: Esteve
authors.initials: E
authors.lastname: Fernández
authors.affiliation: CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain; Department of Preventive Medicine and Public Health, University of Valencia, Valencia, Spain.
authors.forename: Ana M
authors.initials: AM
authors.lastname: García
authors.affiliation: CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain; Agència de Salut Pública de Barcelona, Barcelona, Spain.
authors.forename: Carme
authors.initials: C
authors.lastname: Borrell
mesh_terms: D015706:Bibliometrics; D006801:Humans; D055811:Journal Impact Factor; D007802:Language; D010506:Periodicals as Topic / Q000706:statistics & numerical data*; D011634:Public Health; D013030:Spain
keywords: Bibliometrics; Editorial policies; Journal impact factor