Table 1.
Baseline Characteristics* of White and Black Cardiovascular Health Study Participants Without a History of Atrial Fibrillation, 1989–90, 1992–93
| Whites (n=4,774) |
Blacks (n=911) |
|||
|---|---|---|---|---|
| Characteristic | Mean or % |
SD | Mean or % |
SD |
| Age, y | 72.7 | 5.5 | 72.9 | 5.7 |
| Male | 43% | 37% | ||
| BMI (kg/m2) | 26.3 | 4.5 | 28.5 | 5.5 |
| Height (cm) | 165 | 9.5 | 165 | 9.2 |
| Systolic blood pressure (mmHg) | 135 | 21 | 143 | 23 |
| Hypertension | 63% | 77% | ||
| Fasting glucose (mg/dl) | 109 | 32 | 119 | 55 |
| Diabetes | 14% | 26% | ||
| PR interval (ms) | 169 | 31 | 173 | 33 |
| ≥1 Alcoholic drink/week | 53% | 34% | ||
| Drinks/week** | 4.9 | 8.1 | 4.6 | 9.7 |
| Natural log of NT-proBNP | 5 | 1.1 | 5 | 1.3 |
| FEV1 (L) | 2.1 | 0.7 | 1.8 | 0.6 |
| Cystatin C (mg/L) | 1.1 | 0.3 | 1.1 | 0.5 |
| High school graduate | 74% | 55% | ||
| LV fractional shortening (%) | 42 | 8.2 | 42 | 9.5 |
| LV posterior wall thickness in diastole (cm) | 0.8 | 0.1 | 0.9 | 0.2 |
| Left atrial dimension (cm) | 3.9 | 0.7 | 3.9 | 0.6 |
BMI indicates body mass index; FEV1, forced expiratory volume in 1 second; LV, left ventricular; NT-proBNP, N-terminal pro-B-type natriuretic peptide; SD, standard deviation. Data were missing in 2% or fewer of participants for all characteristics except diabetes (missing in 27 whites and 34 blacks), fasting glucose (29 and 47), NT-proBNP (1131 and 195), cystatin C (607 and 67), left ventricular wall thickness (1682 and 342), and left atrial dimension (181 and 199).
FEV1 was ascertained at baseline in the original cohort, and after one year of follow-up in the black cohort. Echocardiography was performed at baseline in the original cohort and after two years of follow-up in the black cohort.
Among those with ≥1 drink/week.