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Figure 2: Receiver operator characteristic (ROC)-curve along with 95% confi dence 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% confi dence intervals = 0.914 to 0.998; z-statistic = 31.346; signifi cance level P (Area = 0.5) = 0.0001

Figure 2: Receiver operator characteristic (ROC)-curve along with 95% confi dence 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% confi dence intervals = 0.914 to 0.998; z-statistic = 31.346; signifi cance level P (Area = 0.5) = 0.0001