Do Gun‐Purchase Waiting Periods Save Lives?
利用1991-2019年美国县级死亡率数据，研究发现购枪等待期使枪支自杀率降低约5%，总体自杀率降低约2%，但效果仅限于远离无等待期邻州的县。
We study the impact of gun-purchase waiting periods on suicide rates using county-level mortality data from 1991-2019. We find that waiting periods are associated with a reduction in both firearm and overall suicide rates of approximately 5% and 2%, respectively. Novelly, we find that counties that are within 50 miles from a state without a waiting period experience no statistically significant reduction in suicides. Our findings reveal that the decrease in suicides under a waiting period is driven by counties that are more than 50 miles from a non-restricted neighboring state.