Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Study flowchart. Patients positive for SARS‐CoV‐2 by reverse transcription polymerase chain reaction and oxygen demand ≥4 L/min were eligible for the study. Patients were followed daily until either initiation of IMV (IMV‐group) or spontaneous improvement without requirement of IMV (non‐IMV‐group). Patients in the reference group were included based on the same inclusion or exclusion criteria but with oxygen demand <4 L/min. IMV = invasive mechanical ventilation.
