Research Article
Predictive Value of Arterial Blood Lactic Acid Concentration on the Risk of in-Hospital All-Cause Death in Patients with Acute Heart Failure
Figure 3
Receiver operating characteristic curve for predicting the risk of in-hospital all-cause death in patients with acute heart failure. (a), The AUC of lactic acid = 0.616, with a sensitivity of 52.22% and a specificity of 63.35%. The AUC of SAPS II = 0.681, with a sensitivity of 67.75% and a specificity of 57.80%. The AUC of lactic acid combined with SAPS II = 0.696, with a sensitivity of 61.88% and a specificity of 65.89%. (b). The AUC of SOFA score = 0.646, with a sensitivity of 64.60% and a specificity of 63.74%. The AUC of lactic acid combined with SOFA score = 0.661, with a sensitivity of 76.37% and a specificity of 48.13%. Note: The x axis represents the false-positive rate, while the y axis shows the true-positive rate. Abbreviations: ROC, Receiver operating characteristic; AUC, the area under ROC curve; SAPS II, Simplified acute physiology score II; and SOFA, Sequential organ failure assessment.
(a) |
(b) |