Department of Social Science, Humboldt University of Berlin, 10117 Berlin, Germany;
Department of Social Science, Humboldt University of Berlin, 10117 Berlin, Germany.
Proc Natl Acad Sci U S A. 2021 Sep 7;118(36). doi: 10.1073/pnas.2109543118.
Recent evidence suggests that vaccination hesitancy is too high in many countries to sustainably contain COVID-19. Using a factorial survey experiment administered to 20,500 online respondents in Germany, we assess the effectiveness of three strategies to increase vaccine uptake, namely, providing freedoms, financial remuneration, and vaccination at local doctors. Our results suggest that all three strategies can increase vaccination uptake on the order of two to three percentage points (PP) overall and five PP among the undecided. The combined effects could be as high as 13 PP for this group. The returns from different strategies vary across age groups, however, with older cohorts more responsive to local access and younger cohorts most responsive to enhanced freedoms for vaccinated citizens.
最近的证据表明，许多国家的疫苗犹豫率过高，无法可持续地控制 COVID-19。我们使用在德国对 20500 名在线受访者进行的因素调查实验，评估了三种增加疫苗接种率的策略的有效性，即提供自由、经济报酬和在当地医生处接种疫苗。我们的结果表明，这三种策略总体上可以将疫苗接种率提高两到三个百分点（PP），在未决定者中提高五个百分点（PP）。对于这一组，联合效应可能高达 13 个百分点（PP）。然而，不同策略的回报因年龄组而异，较年长的群体对当地获得疫苗的机会更敏感，而较年轻的群体对已接种疫苗公民的自由增强反应最敏感。
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