Figure 2.

Kaplan-Meier curve for N-terminal pro-brain natriuretic peptide (NT-proBNP) at the cutoff value of 6,624 pg/ml. Kaplan-Meier analysis estimates the rate of death within intensive care unit (ICU) stay among septic shock patients according to NT-proBNP values above or below 6,624 pg/ml (cutoff value as determined by receiver operating characteristic curve analysis). The differences between the two groups were significant (p = 0.0011 by the log-rank test).