Do 'All-Age' Bicycle Helmet Laws Work? Evidence from Canada
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Twenty-one states and the District of Columbia require youths to wear helmets when riding a bicycle, and there has been a push to extend such laws to adults. We provide new evidence on helmet laws by studying Canada using difference-in-differences models and restricted area-identified public health
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美国国家经济研究局创建时间：
2018-05-01
