This Appendix provides data and methodology details and additional results for Zhang, Atanasov, Meurer, Whittle, Barreto Parra, and Black, Effects of Short-Term Air Pollution Exposure on U.S. COVID-19 Mortality (working paper 2022). The underlying paper is available from SSRN at...

ImportancePrior studies have shown that long-term exposure to air pollution predicts higher COVID-19 mortality, but there is limited evidence on the effect of short-term fluctuations in air pollution levels. ObjectiveTo determine whether short-term changes in county air-pollution levels predict...