Hanson Andrew, Jolly Nicholas A, Peterson Jeremy
Department of Economics, Marquette University, P.O. Box 1881, Milwaukee, WI 53211, United States.
J Health Econ. 2017 May;53:87-99. doi: 10.1016/j.jhealeco.2017.01.004. Epub 2017 Jan 29.
In response to increasing public awareness and negative long-term health effects of concussions, the National Football League implemented the "Crown-of-the-Helmet Rule" (CHR). The CHR imposes penalties on players who initiate contact using the top of the helmet. This paper examines the intended effect of this policy and its potential for unintended consequences. We find evidence supporting the intended effect of the policy- a reduction in weekly concussion reports among defensive players by as much as 32% (34% for all head and neck injuries), but also evidence of an increase in weekly lower extremity injury reports for offensive players by as much as 34%.
鉴于公众意识的提高以及脑震荡对健康的长期负面影响，美国国家橄榄球联盟实施了“头盔顶部规则”（CHR）。该规则对使用头盔顶部发起碰撞的球员进行处罚。本文研究了这项政策的预期效果及其产生意外后果的可能性。我们发现有证据支持该政策的预期效果——防守球员每周的脑震荡报告减少了多达32%（所有头部和颈部受伤报告减少了34%），但也有证据表明，进攻球员每周的下肢受伤报告增加了多达34%。
