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Wearing of approved helmets by bicyclists has been recently made compulsory in several states in Australia and the United States, and similar legislation is being promoted in the United Kingdom. Those against helmets argue that they are not effective in collisions with motor vehicles. Evidence supporting helmet legislation has included decreases in the number of head injuries associated with wearing a helmet1 and a reduction in the risk of bicycle related head injury among helmet wearers in a case-control study.2 We examined trends in the incidence of head injuries and bicycle related injuries in Brisbane children by using injury surveillance …
Pitt et al. (Sat,) studied this question.