Figure 4From: Serum TGF-β1 and SMAD3 levels are closely associated with coronary artery disease Receiver operating characteristic (ROC) curves for TGF-β1 and SMAD3. The area under the curve of TGF-β1 was 0.678 (95% confidence interval [CI], 0.633–0.723). The area under the curve of SMAD3 was 0.715 (95% CI, 0.672–0.758).Back to article page