Fig. 2. ROC curve describing the diagnostic accuracy of H-FABP (black line), TnI (red line), and CK-MB (blue line) for acute myocardial infarction. (A) All patients (n = 89). (B) Patients presenting at the emergency room within 4 hours after onset of chest pain and/or dyspnea (n = 49). (C) Patients presenting at the emergency room between 4 and 24 hours after onset of chest pain and/or dyspnea (n = 40).

CI = confidence interval, ROC = receiver operating characteristic, AUC = area under the ROC curve, H-FABP = heart-type fatty acid-binding protein, TnI = troponin I, CK-MB = creatine kinase-myocardial band.