Figure 3

(a) Comparison of ROC curve for in-hospital mortality of AHF patients between Na/Cl ratio and serum sodium level. (b) Comparison of ROC curve for in-hospital mortality of AHF patients between Na/Cl ratio and serum chloride level. (c) Comparison of ROC curve for in-hospital mortality of AHF patients between primary GWTG-HF score and adjusted GWTG-HF score (replace serum sodium levels with Na/Cl ratio).