講座題目：Heterogeneous Responses to Subsidies and Returns to Influenza Vaccination: Experimental Evidence from China（對補貼的異質(zhì)性反應(yīng)與流感疫苗接種收益）
主講人：欒夢娜 西南財經(jīng)大學(xué)經(jīng)濟(jì)與管理研究院
時間：2025年12月04日15:30
地點：學(xué)院366（經(jīng)濟(jì)發(fā)展研究中心會議室）
主辦單位：武漢大學(xué)經(jīng)濟(jì)發(fā)展研究中心
主持人：傅十和
講座內(nèi)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.
本文開展了一項析因隨機對照試驗，檢驗三種干預(yù)措施的效果：提醒型助推、一次性補貼、在重新隨機分組后提供疫苗費用信息。結(jié)果顯示，提醒型助推和費用信息均未顯著影響接種行為；一次性補貼則顯著提高了接種意愿和實際接種率，其中小額激勵即可使接種率增加一倍以上。補貼還促進(jìn)了次年再次接種。接種收益存在異質(zhì)性，潛在抵觸程度較低的個體獲得了更大的醫(yī)療費用節(jié)省。
主講人簡介：
欒夢娜，西南財經(jīng)大學(xué)經(jīng)濟(jì)與管理研究院副教授、博士生導(dǎo)師，香港大學(xué)經(jīng)濟(jì)學(xué)博士，主要研究領(lǐng)域為健康經(jīng)濟(jì)學(xué)和發(fā)展經(jīng)濟(jì)學(xué)，聚焦中國醫(yī)療行業(yè)、醫(yī)保醫(yī)藥發(fā)展和健康行為。論文發(fā)表于《經(jīng)濟(jì)學(xué)》（季刊）、Health Economics、Explorations in Economic History等國內(nèi)外經(jīng)濟(jì)學(xué)期刊。主持國家自然科學(xué)基金青年項目。
