Table I.
Baseline characteristics of subjects with and without atrial fibrillation on their baseline electrocardiogram.
| AF (n=46) | No AF (n=925) | P value | |
|---|---|---|---|
| Age (years) | 74 ± 10 | 66 ± 11 | <0.0001 |
| Male | 43 (94%) | 750 (81%) | 0.034 |
|
White
Black Asian Hispanic |
40 (87%)
0 4 (9%) 1 (2%) |
548 (59%)
155 (17%) 107 (12%) 84 (9%) |
0.003; pairwise differences significant for whites (p<0.001) and blacks (0.002) |
| Hypertension | 27 (60%) | 654 (71%) | 0.12 |
| Diabetes | 8 (18%) | 248 (27%) | 0.20 |
| Prior myocardial infarction | 22 (50%) | 496 (54%) | 0.61 |
| Heart failure | 12 (26%) | 206 (22%) | 0.55 |
| Ejection fraction (%) | 60 ± 9 | 62 ± 10 | 0.17 |
| Left ventricular mass index (g/m2) | 100 ± 24 | 100 ± 34 | 0.96 |
| Left atrial volume (ml) | 101 ± 36 | 62 ± 21 | <0.0001 |
| Body mass index (kg/m2) | 30 ± 8 | 28 ± 5 | 0.10 |
| Statin use | 25 (54%) | 604 (65%) | 0.13 |
| Ace inhibitor or angiotensin receptor blocker use | 29 (63%) | 467 (51%) | 0.096 |
| Smoking | 4 (9%) | 189 (21%) | 0.057 |
| Alcohol use | 17 (38%) | 268 (29%) | 0.22 |