Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, California, USA.
Health Econ. 2022 Oct;31(10):2244-2268. doi: 10.1002/hec.4573. Epub 2022 Aug 10.
This article examines the effect of recreational cannabis dispensary sales on traffic crashes by employing difference-in-differences model that exploits the variation in the timing of recreational marijuana dispensary entry across counties within Colorado. Using marijuana-related hospital discharge as a measure of marijuana abuse/misuse, the results indicate a sizable rise in marijuana-related hospital discharges after the entry of retail cannabis stores. However, there is a lack of evidence that traffic crash incidents are affected by the entry. The preferred estimate suggests that, at 90% confidence level, a large increase in traffic crashes by more than 5% can be ruled out.
本文通过采用双重差分模型，利用科罗拉多州各县娱乐大麻销售点开业时间的差异，考察了娱乐大麻销售点对交通事故的影响。本文使用与大麻相关的住院数据作为衡量大麻滥用/误用的指标，结果表明，在零售大麻店开业后，与大麻相关的住院人数大幅上升。然而，没有证据表明交通事故发生率受到了销售点开业的影响。在 90%置信水平下，首选估计表明，可以排除交通事故增加 5%以上的可能性。
