Author: Xiao Wu; Rachel C. Nethery; Benjamin M. Sabath; Danielle Braun; Francesca Dominici
Title: Exposure to air pollution and COVID-19 mortality in the United States Document date: 2020_4_7
ID: 2q6qmex3_10
Snippet: • Second, existing COVID-19 testing and case count data are unable to accurately capture the size of an outbreak in a given county, and the inability to fully adjust for this factor could induce confounding in our analyses (e.g., if counties with high PM 2.5 exposure also tend to have large outbreaks relative to the population size, then their death rates per unit population could appear differentially elevated, inducing a spurious correlation .....
Document: • Second, existing COVID-19 testing and case count data are unable to accurately capture the size of an outbreak in a given county, and the inability to fully adjust for this factor could induce confounding in our analyses (e.g., if counties with high PM 2.5 exposure also tend to have large outbreaks relative to the population size, then their death rates per unit population could appear differentially elevated, inducing a spurious correlation with PM 2.5 ). To explore how this may impact our results, we conduct analyses excluding counties with less than 10 confirmed COVID-19 cases.
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