Intended for healthcare professionals


Do enforced bicycle helmet laws improve public health?: Determining true effectiveness of safety measures

BMJ 2006; 332 doi: (Published 06 April 2006) Cite this as: BMJ 2006;332:852
  1. Riley Geary, traffic safety analyst (
  1. Institute for Traffic Safety Analysis, Arlington, VA 22204, USA

    EDITOR—Hagel et al have not grasped the main point of Robinson's analysis about mandatory bicycle helmet laws.1 2 Regardless of how effective a particular safety measure might be in theory, or even empirically from case-control studies, failure to demonstrate any real benefits in whole populations over time must necessarily call into question its true effectiveness—particularly when compulsion is involved.

    Helmet proponents are often quick to claim any reduction in cycling …

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