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.
Receiver operator characteristic (ROC)-curve along with 95% confidence bounds for calculating the cut-off value of log N-terminal pro-brain natriuretic peptide (NT-proBNP) in predicting the outcome: Area under the ROC-curve = 0.979; standard error = 0.0153; 95% confidence intervals = 0.914 to 0.998; z-statistic = 31.346; significance level P (Area = 0.5) = 0.0001
