学术信息

讲座题目：Heterogeneous Responses to Subsidies and Returns to Influenza Vaccination: Experimental Evidence from China（对补贴的异质性反应与流感疫苗接种收益）

主讲人：栾梦娜  西南财经大学经济与管理研究院

时间：2025年12月04日15:30

地点：学院366（经济发展研究中心会议室）

主办单位：武汉大学经济与管理学院经济发展研究中心

主持人：傅十和

讲座内容摘要：

Many older adults miss life-saving influenza vaccines each winter, especially in low- and middle-income countries. We conducted a factorial randomized controlled trial testing three interventions: (i) a U.S.-style reminder nudge, (ii) one-off subsidies ranging from $1.50 to $15, and (iii) cost information introduced after re-randomization. The reminder nudge and cost information had no impact on vaccination. One-off subsidies substantially increased both vaccination intentions and behaviors, with small incentives (from $3 upward) more than doubling uptake. Subsidies also raised re-vaccination in the following year. Returns to vaccination were heterogeneous, with greater medical cost savings among individuals with lower unobserved resistance. On average, influenza vaccination saved $431 in medical expenses, yielding a benefit–cost ratio of 40.

  本文开展了一项析因随机对照试验，检验三种干预措施的效果：提醒型助推、一次性补贴、在重新随机分组后提供疫苗费用信息。结果显示，提醒型助推和费用信息均未显著影响接种行为；一次性补贴则显著提高了接种意愿和实际接种率，其中小额激励即可使接种率增加一倍以上。补贴还促进了次年再次接种。接种收益存在异质性，潜在抵触程度较低的个体获得了更大的医疗费用节省。

主讲人简介：

栾梦娜，西南财经大学经济与管理研究院副教授、博士生导师，香港大学经济学博士，主要研究领域为健康经济学和发展经济学，聚焦中国医疗行业、医保医药发展和健康行为。论文发表于《经济学》（季刊）、Health Economics、Explorations in Economic History等国内外经济学期刊。主持国家自然科学基金青年项目。