Table 1.
Baseline characteristics of 10,723 patients with newly diagnosed atrial fibrillation in the presence and absence of an identifiable precipitant.
| Precipitant Absent (n=8,634) | Precipitant Present (n=2,089) | p-value | |
|---|---|---|---|
| Demographic Characteristics | |||
| Age (years) | 66.9 ± 9.8 | 67.0 ± 9.7 | 0.69 |
| Male | 4,997 (58%) | 1,276 (61%) | 0.008 |
| White | 7425 (86%) | 1775 (85%) | 0.24 |
| Admission status at time of first-detected AF | <0.001 | ||
| Inpatient | 3,603 (42%) | 1,634 (78%) | |
| Outpatient | 3,866 (45%) | 269 (13%) | |
| Outpatient-Emergency | 45 (0.005%) | 2 (0.001%) | |
| Not recorded | 1,120 (13%) | 184 (0.09%) | |
| Comorbid Conditions | |||
| Hypertension | 6,471 (75%) | 1,689 (81%) | <0.001 |
| Heart failure | 2,632 (30%) | 885 (42%) | <0.001 |
| Myocardial infarction | 1,909 (30%) | 766 (43%) | <0.001 |
| Valvular heart disease | 1,061 (12%) | 455 (22%) | <0.001 |
| Peripheral artery disease | 1,430 (17%) | 519 (25%) | <0.001 |
| Stroke/transient ischemic attack | 1,265 (15%) | 375 (18%) | <0.001 |
| Diabetes mellitus | 2,440 (28%) | 748 (36%) | <0.001 |
| Chronic lung disease | 2,389 (28%) | 844 (40%) | <0.001 |
| Cancer | 2,281 (26%) | 773 (37%) | <0.001 |
| CHA2DS2-VASc score* | 3 [2, 4] | 4 [2, 5] | <0.001 |
| Health-Related Behaviors | |||
| Tobacco use | 1,999 (23%) | 695 (33%) | <0.001 |
| Alcohol use | 395 (5%) | 230 (11%) | <0.001 |
Characteristics displayed as n (%), mean ± SD, or median [25th, 75th percentile]
Characteristics are determined at the date of newly diagnosed AF.
*
Calculated by assigning 1 point to the presence of heart failure, hypertension, diabetes, vascular disease (prior myocardial infarction, peripheral artery disease, or aortic atherosclerosis), female sex, or age between 65 and 74, and 2 points to age greater than 75 years or history of stroke/transient ischemic attack.