Center for Economic Behavior and Inequality, University of Copenhagen, 1353 Copenhagen, Denmark;
Danish Finance Institute, 2000 Frederiksberg, Denmark.
Proc Natl Acad Sci U S A. 2020 Aug 25;117(34):20468-20473. doi: 10.1073/pnas.2010068117. Epub 2020 Aug 3.
This paper uses real-time transaction data from a large bank in Scandinavia to estimate the effect of social distancing laws on consumer spending in the coronavirus 2019 (COVID-19) pandemic. The analysis exploits a natural experiment to disentangle the effects of the virus and the laws aiming to contain it: Denmark and Sweden were similarly exposed to the pandemic but only Denmark imposed significant restrictions on social and economic activities. We estimate that aggregate spending dropped by around 25% (95% CI: 24 to 26%) in Sweden and, as a result of the shutdown, by 4 additional percentage points (95% CI: 3 to 5 percentage points [p.p.]) in Denmark. This suggests that most of the economic contraction is caused by the virus itself and occurs regardless of social distancing laws. The age gradient in the estimates suggests that social distancing reinforces the virus-induced drop in spending for low-health-risk individuals but attenuates it for high-risk individuals by lowering the overall prevalence of the virus in the society.
本文使用来自斯堪的纳维亚一家大型银行的实时交易数据,估计社交距离法对 2019 年冠状病毒(COVID-19)大流行期间消费者支出的影响。该分析利用自然实验来区分病毒和旨在控制病毒的法律的影响:丹麦和瑞典受到大流行的影响相似,但只有丹麦对社会和经济活动实施了重大限制。我们估计,瑞典的总支出下降了约 25%(95%置信区间:24 至 26%),而由于关闭,丹麦的支出额外下降了 4 个百分点(95%置信区间:3 至 5 个百分点[p.p.])。这表明,经济收缩的大部分是由病毒本身引起的,并且无论是否实施社交距离法都会发生。估计中的年龄梯度表明,社交距离会加强低健康风险个体因病毒而导致的支出下降,但通过降低社会中病毒的总体流行率,对高风险个体的影响会减弱。