Table 1.

Baseline characteristics of participants.

Variable	Number (Percentage) or Median (IQR for continuous variables) N=936
Patient Characteristics
Age, median (IQR), y	76 (72–81)
Women, No. (%, CI)	484 (52%, 49–55%)
BMI, median (IQR)	27 (25–30)
Risk factors for coronary heart disease
Hypertension, No. (%, CI)	629 (67%, 64–70%)
Prior or current smoking, No. (%, CI)	560 (60%, 57–63%)
Family history of MI, No. (%, CI)	334 (36%, 33–39%)
Diabetes, No. (%, CI)	337 (36%, 33–39%)
Hypercholesterolemia, No. (%, CI)	421 (45%, 42–48%)
History of atherosclerosis
Coronary disease (Hospital records)
Prior MI, No. (%, CI)	91 (10%, 8–12%)
Prior coronary revascularization, No. (%, CI)	139 (15%, 13–17%)
Other atherosclerotic disease
Peripheral arterial disease, No. (%, CI)	18 (2%, 1–3%)
Stroke, No. (%, CI)	52 (6%, 4–7%)
Laboratory Results
eGFR, median (IQR) mL/min per 1.73 m2	69 (59–82)
Total Cholesterol, median (IQR), mg/dL*	208 (178–240)
HDL Cholesterol, median (IQR), mg/dL*	56 (46–68)
LDL Cholesterol, median (IQR), mg/dL*	128 (99–158)
Triglycerides, median (IQR), mg/dL*	98 (75–135)
Coronary calcium score, median (IQR), Agatston†	361 (74–974)

^*To convert to SI units, multiply cholesterol values by 0.0259, and triglyceride values by 0.0113.

^†The coronary calcium scores ranged from 0–7333. Coronary artery calcification occurs in atherosclerotic arteries and is absent in the normal vessel wall. Higher coronary calcium scores, measured by the Agatston method from CT scans, correlate with higher risks of coronary events.