Dave Dhaval, Sabia Joseph J, Safford Samuel
Department of Economics, Center for Health Economics & Policy Studies, Bentley University, IZA & NBER, Waltham, USA.
Center for Health Economics & Policy Studies, Department of Economics, San Diego State University & IZA, San Diego, USA.
J Risk Uncertain. 2022;64(2):109-145. doi: 10.1007/s11166-022-09379-8. Epub 2022 May 27.
In the midst of mass COVID-19 vaccination distribution efforts in the U.S. Texas became the first state to abolish its mask mandate and fully lift capacity constraints for all businesses, effective on March 10, 2021. Proponents claimed that the reopening would generate short-run employment growth and signal a return to normal while opponents argued that it would cause a resurgence of COVID-19 and kill Texans. This study finds that each side was largely incorrect. First, using daily anonymized smartphone data - and synthetic control and difference-in-differences approaches - we find no evidence that the Texas reopening led to substantial changes in mobility, including foot traffic at a wide set of business establishments. Second, we find no evidence that the Texas reopening affected the rate of new COVID-19 cases or deaths during the five weeks following the reopening. Our null results persist across more urbanized and less urbanized counties, as well as across counties that supported Donald Trump and Joe Biden in the 2020 presidential election. Finally, we find no evidence that the Texas reopening impacted short-run employment, including in industries most affected by the reopening. Together, these findings underscore the persistence of late-pandemic era private behavior and stickiness in individuals' risk-related beliefs, and suggest that reopening policies may have impacts that are more muted than policymakers expect.
The online version contains supplementary material available at 10.1007/s11166-022-09379-8.
在美国大规模开展新冠疫苗接种工作之际,得克萨斯州成为首个废除口罩强制令并全面取消所有企业容量限制的州,于2021年3月10日生效。支持者称重新开放将带来短期就业增长,并标志着回归正常,而反对者则认为这将导致新冠疫情卷土重来并危及得克萨斯州居民生命。本研究发现双方观点大多都是错误的。首先,通过使用每日匿名智能手机数据以及合成控制法和差分法,我们没有发现证据表明得克萨斯州的重新开放导致出行发生重大变化,包括各类商业场所的人流量。其次,我们没有发现证据表明得克萨斯州的重新开放影响了重新开放后五周内新冠新增病例或死亡的发生率。我们的零结果在城市化程度较高和较低的县以及在2020年总统大选中支持唐纳德·特朗普和乔·拜登的县中都持续存在。最后,我们没有发现证据表明得克萨斯州的重新开放影响了短期就业,包括在受重新开放影响最大的行业。总之,这些发现凸显了疫情后期私人行为的持续性以及个人风险相关信念的粘性,并表明重新开放政策的影响可能比政策制定者预期的更为微弱。
在线版本包含可在10.1007/s11166-022-09379-8获取的补充材料。