Public Health Policy at Scale: Impact of a Government-Sponsored Information Campaign on Infant Mortality in Denmark
利用丹麦全国数据，通过断点回归设计评估一项政府信息运动（主要通过护士家访项目）对婴儿猝死综合征死亡率的影响，发现该运动使婴儿死亡率降低17.2%，对低出生体重和早产儿效果更显著，并减少了健康不平等。
Abstract We evaluate the impact of a nationwide public health intervention on deaths from sudden infant death syndrome (SIDS), using population data from Denmark in a regression discontinuity research design. The information campaign—implemented primarily through a universal nurse home visiting program—reduced infant mortality by 17.2% and saved between 11.6 and 13.5 lives over 10,000 births. The estimated effect sizes are 11–14 times larger among low-birthweight and preterm infants relative to the overall population. Improvement in infant mortality is concentrated among those with low socioeconomic status and with limited access to health information, thereby reducing health inequities at birth.