Letters

Cochrane reviews v industry supported meta-analyses: We should read all reviews with caution

BMJ 2006; 333 doi: https://doi.org/10.1136/bmj.333.7574.916 (Published 26 October 2006) Cite this as: BMJ 2006;333:916
  1. James C Coyne, professor of psychology in psychiatry (jcoyne@mail.med.upenn.edu)
  1. University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA

    EDITOR—That industry sponsored meta-analyses differ in conclusions from Cochrane reviews does not mean that industry sponsorship is the only source of bias or that Cochrane reviews should be uncritically accepted.1

    Allegiances of authors of meta-analyses are not only associated with selective attention to relevant studies and more positive conclusions in the case of industry ties.2 We should be sceptical about …

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