Estimating the fatality rate is difficult but doable with better data

A. N. Angelopoulos, R. Pathak, R. Varma, M. I. Jordan. On Identifying and Mitigating Bias in the Estimation of the COVID-19 Case Fatality Rate. Harvard Data Science Review Special Issue 1 — COVID-19: Unprecedented Challenges and Chances. 2020.


The case fatality rate quantifies how dangerous COVID-19 is, and how risk of death varies with strata like geography, age, and race. Current estimates of the COVID-19 case fatality rate (CFR) are biased for dozens of reasons, from…