Journal of Health Economics · 2026 · Claudia Persico、Dave E. Marcotte
中文摘要
本文利用美国八年来全部死亡证明中详细的每日死因数据,研究空气污染与自杀之间的关系。我们采用以风向作为每日污染暴露工具变量的两阶段残差纳入估计量,估计出每日PM2.5浓度每增加1 μg/m³,每日自杀人数增加0.39%,每月与自杀相关的住院人次增加50.5%。我们发现,男性、年轻人以及污染平均水平高于中位数的县中效应相对较大。我们的事件研究估计表明,污染与自杀暴露之间的关系是同期的。
Abstract
We study the relationship between air pollution and suicide using detailed daily cause of death data from all death certificates in the U.S. over eight years. Using a two-stage residual inclusion estimator with wind direction as an instrument for daily pollution exposure, we estimated that a 1 μg/m3 increase in daily PM2.5 is associated with a 0.39% increase in daily suicides and a 50.5% increase in monthly suicide-related hospitalizations. We find relatively large effects for men, young persons, and in counties where the mean level of pollution is above the median. Our event study estimates show the relationship between pollution and suicide exposure is contemporaneous.