Table 1.
Baseline characteristics by race/ethnicity
| Non‐HispanicWhite, n = 9504,Mean, % (SD) | African American,n = 18 167,Mean, % (SD) | Hispanic,n = 20 960,Mean, % (SD) | Total,n = 48 631 | P Value | |
|---|---|---|---|---|---|
| Demographics | |||||
| Age, y | 68.6 (16.6) | 58.1 (17.0) | 56.6 (16.8) | 59.5 (17.5) | <0.01 |
| Male | 48.50% | 35.50% | 37.50% | 38.90% | <0.01 |
| Height, cm | 164.7 (21.5) | 166.1 (20.3) | 161.2 (18.3) | 163.7 (19.8) | <0.01 |
| Weight, kg | 77.3 (66.2) | 83.8 (27.0) | 77.8 (24.1) | 80.0 (37.2) | <0.01 |
| Systolic BP, mm Hg | 132.0 (24.1) | 135.9 (24.8) | 130.8 (23.7) | 133.0 (24.3) | <0.01 |
| Diastolic BP, mm Hg | 71.9 (13.9) | 77.0 (15.2) | 73.6 (13.9) | 74.3 (14.6) | <0.01 |
| Mean survival years | 2.83 (3.04) | 3.31 (3.16) | 3.36 (3.21) | 3.23 (3.16) | <0.01 |
| Social economic status | −1.5 (2.9) | −3.4 (2.8) | −4.3 (2.7) | −3.4 (2.9) | <0.01 |
| Comorbidities | |||||
| Development of atrial fibrillation | 16.80% | 8.70% | 7.70% | 9.80% | <0.01 |
| Cardiac murmur | 0.50% | 1.10% | 0.90% | 0.90% | <0.01 |
| Diabetes mellitus | 14.50% | 25.00% | 26.80% | 23.70% | <0.01 |
| Heart failure | 7.40% | 8.90% | 7.40% | 8.00% | <0.01 |
| Myocardial infarction | 0.10% | 0.20% | 0.20% | 0.20% | 0.036 |
| Smoking | 0.30% | 0.70% | 0.90% | 0.70% | <0.01 |
| Treatment for hypertension | 44.00% | 59.60% | 52.70% | 53.60% | <0.01 |
| ECG characteristics | |||||
| LVH | 30.10% | 41.90% | 29.90% | 34.40% | <0.01 |
| PR interval, ms | 164.52 (37.5) | 162.58 (31.8) | 154.89 (27.6) | 159.7 (31.6) | <0.01 |
| Medication | |||||
| β‐Blockers | 67.3% | 61.2% | 56.4% | 60.3% | <0.01 |
| Calcium channel blockers | 44.1% | 52.4% | 40.6% | 45.7% | <0.01 |
| Digoxin | 15.8% | 8.8% | 7.7% | 9.7% | <0.01 |
Abbreviations: BP, blood pressure; ECG, electrocardiogram; LVH, left ventricular hypertrophy; SD, standard deviation.
Values in table denoted as mean or number (%).