Table 1.
Participant characteristics at the CARDIA study examination Year 5, overall and in the analytic cohorts for LAD and LAA
| Variables | Overall cohort (n = 4352) Mean (SD) |
LAD cohort (n = 4082) Mean (SD) |
LAA cohort (n = 2412) Mean (SD) |
|---|---|---|---|
| Age (years) | 30 (4) | 30 (4) | 30 (4) |
| BMI (kg/m2) | 26 (6) | 26 (6) | 25 (5) |
| SBP (mmHg) | 108 (12) | 108 (12) | 107 (11) |
| Total chol (mg/dL) | 178 (34) | 178 (34) | 176 (33) |
| HDL-C (mg/dL) | 53 (14) | 53 (14) | 53 (14) |
| % | % | % | |
| White race | 51 | 52 | 51 |
| Male gender | 45 | 46 | 48 |
| Current smoker | 29 | 28 | 28 |
| Anti-HTN medication | 1.6 | 1.5 | 1.3 |
| Diabetes | 0.9 | 0.8 | 0.7 |
SD, standard deviation; BMI, body-mass index; SBP, systolic blood pressure; LAD, left atrial diameter assessed by M-mode echocardiography; LAA, left atrial area assessed by 2D four-chamber echocardiography; total chol, total cholesterol; HDL-C, high-density lipoprotein cholesterol; anti-HTN medication, anti-hypertensive medication.