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.
Kaplan–Meier plots for disease severity and different prognostic factors of all patients with COVID-19. Mortality was significantly higher in patients of the severe group (A), of critical subtype (B), and with CVD (C), PTA ≤ 90.75 (D), BUN ≥ 6.27 mmol/L (E), and IL-6 ≥ 0.10 pg/dl (F) according to corresponding ROC cutoffs. BUN, blood urea nitrogen; CVD, cerebrovascular disease; HR, hazard ratio; IL-6, interleukin-6; PTA, prothrombin activity.
