Table 1.
Baseline Participant Characteristics by P-Wave Duration Status, Atherosclerosis Risk in Communities Study, 1987–2001
| Characteristic | Normal PWD (n=10,624) | Prolonged PWD (N=4,697) | P-Value |
|---|---|---|---|
| Age (years) † | 53.8 ± 5.7 | 55.0 ± 5.7 | <0.0001 |
| Women | 6,392 (60.2%) | 2069 (44.1%) | <0.0001 |
| Black | 2464 (23.2%) | 1584 (33.7%) | <0.0001 |
| Education ≥ high school | 8,230 (77.5%) | 3469 (73.9%) | <0.0001 |
| Current smoker | 2954 (27.8%) | 1050 (22.4%) | <0.0001 |
| Body mass index (kg/m2) † | 27.0 ± 5.1 | 29.3 ± 5.6 | <0.0001 |
| Diabetes | 563 (5.3%) | 393 (8.4%) | <0.0001 |
| Hypertension medications | 2711 (25.5%) | 1954 (41.6%) | <0.0001 |
| Systolic blood pressure (mmHg) † | 119.4 ± 18.1 | 125.5 ± 19.9 | <0.0001 |
| Diastolic blood pressure, (mmHg) † | 72.6 ± 10.8 | 76.2 ± 11.7 | <0.0001 |
| Heart failure | 415 (3.9%) | 293 (6.2%) | <0.0001 |
| Coronary heart disease | 387 (3.6%) | 346 (7.4%) | <0.0001 |
| Incident atrial fibrillation | 442 (4.2%) | 447 (9.5%) | <0.0001 |
| Left ventricular hypertrophy | 151 (1.4%) | 185 (3.9%) | <0.0001 |
| Use of Digoxin | 106 (1.0%) | 111 (2.4%) | <0.0001 |
| Use of Beta-blockers | 811 (7.6%) | 786 (16.7%) | <0.0001 |
| Use of Anti-arrhythmics | 49 (0.5%) | 66 (1.4%) | <0.0001 |
†
Data are presented as mean ± standard deviation
‡
Abbreviations: PWD (P-wave duration)