A theory of triage

This paper provides a general framework for conceptualizing triage for intensive care unit admissions in public health emergencies such as the COVID-19 pandemic. It applies this framework to some of the guidelines issued during the pandemic and addresses some controversial issues, including the role of age, the use of lives or life years, and the relevance of quality of life considerations. The paper defends a view on which triage protocols for public health emergencies should aim to maximize the number of life years saved, may take into account age as a proxy, and should ignore quality of life considerations.