Figure 4.

Receiver operator characteristic (ROC) curves for the prediction of the presence of coronary stenosis. ROC curves were plotted for conventional coronary risk factors, with and without maximum carotid intima‐media thickness (max‐IMT). This analysis showed that the area under curve (AUC) significantly increased after the addition of max‐IMT to conventional coronary risk factors (from 0.64 to 0.74, P = 0.020), showing that the addition of max‐IMT to conventional risk factors significantly improves the prediction ability of coronary atherosclerosis. Conventional risk factors include age, sex, smoking status, hypertension, dyslipidemia and albumin creatinine ratio. CI, confidence interval