Footnote: Patients were considered to have high coronary artery calcification (CAC) if CAC ≥ 300 Agatston units or CAC ≥75th percentile of expected coronary artery calcium for their age, sex and race. Patients with and without high CAC are represented in filled and empty circles, respectively.
Risk scores are represented as the 25th, 50th and 75th percentile. Dotted lines represent the threshold that classified patients into low and elevated risk: 10% for Framingham risk score (FRS) and the Reynolds risk score (RRS), and 7.5% for 10-year American College of Cardiology/American Heart Association (ACC/AHA) risk score.