title: High reprint orders in medical journals and pharmaceutical industry funding: case-control study.
abstract: OBJECTIVE
  To assess the extent to which funding and study design are associated with high reprint orders.
  
  
  METHODS
  Case-control study.
  
  
  METHODS
  Top articles by size of reprint orders in seven journals, 2002-09.
  
  
  METHODS
  Lancet, Lancet Neurology, Lancet Oncology (Lancet Group), BMJ, Gut, Heart, and Journal of Neurology, Neurosurgery & Psychiatry (BMJ Group) matched to contemporaneous articles not in the list of high reprint orders.
  
  
  METHODS
  Funding and design of randomised controlled trials or other study designs.
  
  
  RESULTS
  Median reprint orders for the seven journals ranged from 3000 to 126,350. Papers with high reprint orders were more likely to be funded by the pharmaceutical industry than were control papers (industry funding versus other or none: odds ratio 8.64, 95% confidence interval 5.09 to 14.68, and mixed funding versus other or none: 3.72, 2.43 to 5.70).
  
  
  CONCLUSIONS
  Funding by the pharmaceutical industry is associated with high numbers of reprint orders.
authors: Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.
authors: Adam E
authors: AE
authors: Handel
authors: Sunil V
authors: SV
authors: Patel
authors: Julia
authors: J
authors: Pakpoor
authors: George C
authors: GC
authors: Ebers
authors: Ben
authors: B
authors: Goldacre
authors: Sreeram V
authors: SV
authors: Ramagopalan
mesh_terms: D015706:Bibliometrics; D016022:Case-Control Studies; D004345:Drug Industry / Q000191:economics*; D006801:Humans; D010506:Periodicals as Topic / Q000191:economics / Q000706:statistics & numerical data*; D012107:Research Design; D012109:Research Support as Topic