Letters Lifestyle and childhood obesity

Lifestyle intervention in preschool children has little effect on obesity

BMJ 2012; 344 doi: https://doi.org/10.1136/bmj.e714 (Published 31 January 2012) Cite this as: BMJ 2012;344:e714
  1. Brad Metcalf, statistician1,
  2. Terence Wilkin, professor of endocrinology and metabolism1
  1. 1Peninsula Medical School, University Medicine, Level 7 Derriford Hospital, Plymouth PL6 8DH, UK
  1. brad.metcalf{at}nhs.net

Such is the scale of childhood obesity, and so serious the metabolic complications associated with it, that its prevention is something of a holy grail. The need for trialists to come up with a solution—any solution—has stretched the interpretation of effect sizes to their limits. The result is inappropriate inference and messages to public health that are …

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