Figure 2: ROC curve analysis of OPG with CIMT (ROC curve showed that the area under the curve was 96.8%, the cutoff point was 6.25 ng/ml, the sensitivity was 90%, the specificity was 87%, the positive predictive value was 92%, and the negative predictive value was 84%). CIMT, carotid intima media thickness; OPG, osteoprotegerin; ROC, receiver operating characteristic