Table_1_Mask-Wearing Increased After a Government Recommendation: A Natural Experiment in the U.S. During the COVID-19 Pandemic.docx

On April 3 2020, the U.S. Centers for Disease Control and Prevention (CDC) recommended that all Americans wear face masks to prevent the spread of COVID-19. The announcement came during the fielding of a large, nationally-representative survey (N = 3,933) of Americans' COVID-19-related knowledge, attitudes, and behaviors, providing an opportunity to measure the impact of the CDC's recommendation on public reported mask wearing and buying behavior. The study found significant increases in reported mask wearing (+12 percentage points) and mask buying (+7 points). These findings indicate the speed with which government recommendations can affect the adoption of protective behaviors by the public. The results demonstrate the importance of national leadership and communication during a public health crisis.

2020年4月3日，美国疾病控制与预防中心（CDC）建议所有美国人佩戴口罩以防止COVID-19的传播。此建议发布于一项大规模、具有全国代表性的调查（N = 3,933）期间，该调查旨在评估美国民众对COVID-19相关知识与态度、行为的认知，从而为衡量CDC建议对公众报告的口罩佩戴和购买行为的影响提供了契机。研究发现，报告的口罩佩戴率上升了12个百分点，口罩购买量增加了7个百分点。这些发现揭示了政府建议对公众采取防护行为的影响速度之快。研究结果凸显了在公共卫生危机中，国家领导和沟通的重要性。