This Online Appendix provides sample and methodology details and selected additional results for Barreto Parra, Atanasov, Whittle, Meurer, Luo, Zhang, and Black, The Effect of the COVID-19 Pandemic on the Elderly: Population Fatality Rates, COVID Mortality Percentage and Life Expectancy loss....

The COVID-19 pandemic has disproportionately affected the elderly. This article provides a detailed analysis of those effects, drawing primarily on individual-level mortality data covering almost three million persons aged 65+ in three Midwest states (Indiana, Illinois, and Wisconsin). We report...