Fig 1. Flow Diagram.
The frequencies of annual admission to intensive care units (ICUs), mechanical ventilatory support (MVS), and unplanned extubation (UE). Controls are the subjects without UE.
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.