Figure 2.

Receiver operating characteristic (ROC) curves for the criterion variable represented by pulse pressure and three condition variables represented by different scores of coronary artery calcifications (CAC); each variable has the absence of CAC as contrast. The dotted line represents the condition variable calcium score 0, the dashed and solid lines represent calcium score ≥100 and calcium score ≥400, respectively. AUC represents area under the curve. Numbers in brackets are upper and lower 95% confidence limits (95% CL).