Sports injuries and game stakes: Concussions in the National Football League
研究发现NFL常规赛中，当一场胜利能确保球队进入季后赛时，该队球员发生脑震荡的概率高出24个百分点，首次证实了比赛重要性越高、受伤风险越大的假设。
Abstract The National Football League's regular‐season games are not of equal importance: some games loom larger than others for determining a team's chance to qualify for the playoffs. We develop an incentive‐based measure of the impact of winning a game on a team's qualification probability to study the relationship between stakes and injuries. We find teams are 24 percentage points more likely to suffer concussions in games where a win secures one team a playoff berth. This is the first evidence to support the risk‐escalation hypothesis that injuries increase with a competition's stakes. We then discuss implications for sports injury prevention.