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Receiver operating curve (ROC) for evaluating the diagnostic role of growth differentiation factor-15 (GDF-15) on coronary artery disease (CAD); serum GDF-15 concentrations in CAD and control groups were used to draw ROC, and the specificity, sensitivity, and areas under the curve were determined ([AUC] 0.912, CI 0.866–0.959; P<0.0001, optimum cut-off value of GDF-15 was 1233 ng/L with 71% specificity and 71% sensitivity).
