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.
TP, true positives; TN, true negatives; FP, false positives; FN, false negatives; Sn, sensitivity; Sp, specificity; PaO2/FiO2, partial pressure of oxygen in arterial blood to the fraction of inspired oxygen ratio
