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.
Forest plot showing the pooled prevalence of requirement of mechanical ventilation among COVID-19 patients. (Suppl. Figure: 3 (193.3KB, tif) - Funnel plot showing publication bias among studies evaluating the requirement of mechanical ventilation of COVID-19 patients.)
