Objectives This study aims to conduct a systematic review of economic evaluations of
COVID-19 interventions and to examine whether and how these studies incorporate non …

National and local governments have implemented a large number of policies in response
to the Covid-19 pandemic. Evaluating the effects of these policies, both on the number of …

Background The COVID-19 pandemic has led to an avalanche of scientific studies, drawing
on many different types of data. However, studies addressing the effectiveness of …

Difference-in-differences and synthetic control methods have become common study
designs for evaluating the effects of changes in policies, including health policies. They also …

Policy responses to coronavirus disease 2019 (COVID-19), particularly those related to
nonpharmaceutical interventions, are unprecedented in scale and scope. However …

Abstract Background In 2020, the Japanese government implemented first of two Go To
Travel campaigns to promote the tourism sector as well as eating and drinking …

Background: Indoor dining is one of the potential drivers of COVID-19 transmission. We
used the heterogeneity among state government preemption of city indoor dining closures to …

Importance Despite considerable prior research, it remains unclear whether and by how
much state COVID-19− related restrictions affected the number of pandemic deaths in the …

Medical practitioners and healthcare workers rely on information accuracy in academic
journals. Some Covid-19 papers contain “tortured phrases”, nonstandard English …

Researchers frequently employ difference-in-differences (DiD) to study the impact of public
health interventions on infectious disease outcomes. DiD assumes that treatment and non …