University of California, Santa Cruz, USA.
J Health Econ. 2022 Jan;81:102578. doi: 10.1016/j.jhealeco.2021.102578. Epub 2021 Dec 20.
Conditional cash lotteries (CCLs) provide people with opportunities to win monetary prizes only if they make specific behavioral changes. We conduct a case study of Ohio's Vax-A-Million initiative, the first CCL targeting COVID-19 vaccinations. Forming a synthetic control from other states, we find that Ohios incentive scheme increases the vaccinated share of state population by 1.5 percent (0.7 pp), costing sixty-eight dollars per person persuaded to vaccinate. We show this causes significant reductions in COVID-19, preventing at least one infection for every six vaccinations that the lottery had successfully encouraged. These findings are promising for similar CCL public health initiatives.
条件性现金彩票（CCL）为人们提供了只有在做出特定行为改变的情况下才能赢得货币奖励的机会。我们对俄亥俄州的“Vax-A-Million”计划进行了案例研究，这是首个针对 COVID-19 疫苗接种的 CCL。我们从其他州组成一个合成对照组，发现俄亥俄州的激励计划使该州的疫苗接种率提高了 1.5%（0.7 个百分点），每说服一个人接种疫苗，成本为 68 美元。我们发现这显著降低了 COVID-19 的发病率，彩票成功鼓励的每六次接种至少预防了一次感染。这些发现为类似的 CCL 公共卫生计划提供了希望。
