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.
Combination chart showing mortality (shown as shaded gray area) and bar diagrams showing proportion of time spent <85% while on supplemental oxygen. Lower-oxygen target groups spent more time <85% Spo2 compared with higher-oxygen target groups.
