require care in the intensive care unit (ICU). Objective To evaluate the independent risk
factors associated with mortality of patients with COVID-19 requiring treatment in ICUs in the
Lombardy region of Italy. Design, Setting, and Participants This retrospective, observational
cohort study included 3988 consecutive critically ill patients with laboratory-confirmed
COVID-19 referred for ICU admission to the coordinating center (Fondazione IRCCS [Istituto …