Table 1. Characteristics of the study population*.
| Self-reported atrial fibrillation | ECG- detected atrial fibrillation | ||||
|---|---|---|---|---|---|
| Absent N = 25,025 |
Present N= 2084 |
Absent N= 26,749 |
Present N= 360 |
||
| Age (year) | 64.5 ± 9.3 | 67.0 ± 9.6 | 64.5 ± 9.3 | 73.6 ± 8.4 | |
| Categorical Age | <65 | 52.3 | 42.5 | 52.0 | 14.4 |
| 65-74 | 32.0 | 32.8 | 32.0 | 36.7 | |
| 75+ | 15.8 | 24.7 | 16.0 | 48.9 | |
| Black race (%) | 40.6 | 35.4 | 40.5 | 19.7 | |
| Male sex (%) | 44.7 | 44.2 | 44.3 | 71.1 | |
| Systolic blood pressure (mmHg) | 127.3 ± 16.5 | 127.8 ± 17.1 | 127.3 ± 16.5 | 125.6 ± 16.1 | |
| Use of antihypertensive drugs (%) | 48.8 | 62.0 | 49.8 | 51.9 | |
| Current smoking (%) | 14.2 | 13.2 | 14.2 | 7.8 | |
| Diabetes (%) | 20.4 | 24.8 | 20.7 | 26.9 | |
| Left vent hypertrophy (%) | 9.5 | 10.3 | 9.6 | 5.6 | |
| History of heart disease (%) | 20.0 | 39.1 | 21.3 | 40.3 | |
| Warfarin use (%) | 1.7 | 19.3 | 2.2 | 66.7 | |
*
Continuous variable expressed as mean ± standard deviation