Intended for healthcare professionals

Letters Data openness

Reporting of absolute risk

BMJ 2010; 341 doi: (Published 16 November 2010) Cite this as: BMJ 2010;341:c6331
  1. Mark J Bolland, senior research fellow1,
  2. Andrew Grey, associate professor of medicine1
  1. 1Department of Medicine, University of Auckland, Auckland 1142, New Zealand
  1. m.bolland{at}

In arguing that abstracts should always contain absolute risks, Gigerenzer and colleagues do not tackle the practical limitations of this recommendation.1 They do not mention for whom the absolute risks should be reported. Absolute risk reduction (ARR) depends on baseline risk and the event rate, each of which varies by …

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