Table 1. Demographic and clinical characteristics of subjects with and without AF during the window period (2002–2004).
| Characteristic | Overall (n=206013) | Incident AF | p | |
|---|---|---|---|---|
| Yes (n=3517) | No (n=202496) | |||
| Age (years) | <0.001 | |||
| 30-39 | 53278 (25.9) | 242 (6.9) | 53036 (26.2) | |
| 40-49 | 66143 (32.1) | 629 (17.9) | 65514 (32.4) | |
| 50-59 | 42890 (20.8) | 799 (22.8) | 42091 (20.8) | |
| 60-69 | 30501 (14.8) | 1090 (31.0) | 29411 (14.5) | |
| 70-79 | 11363 (5.5) | 628 (17.9) | 10735 (5.3) | |
| ≥80 | 1838 (0.9) | 129 (3.7) | 1709 (0.8) | |
| Sex | 0.167 | |||
| Male | 121226 (58.8) | 2043 (58.1) | 119183 (58.9) | |
| Female | 84787 (41.2) | 1474 (41.9) | 83313 (41.1) | |
| BMI (kg/m2) | 23.8±3.1 | 24.3±3.4 | 23.8±3.1 | <0.001 |
| SBP (mmHg) | 125.4±17.4 | 131.6±19.6 | 125.3±17.4 | <0.001 |
| DBP (mmHg) | 78.7±11.4 | 81.1±12.2 | 78.6±11.4 | <0.001 |
| Glucose (mg/dL) | 96.6±30.8 | 101.4±32.4 | 96.5±30.7 | <0.001 |
| Total-cholesterol (mg/dL) | 196.6±37.7 | 199.2±39.2 | 196.5±37.7 | <0.001 |
| Hemoglobin (g/dL) | 14.0±1.5 | 13.9±1.5 | 14.0±1.5 | <0.001 |
| Co-morbid condition | ||||
| Hypertension | 43743 (21.2) | 1757 (50.0) | 41986 (20.7) | <0.001 |
| Ischemic heart disease | 14378 (7.0) | 735 (20.9) | 13643 (6.7) | <0.001 |
| Heart failure | 8304 (4.0) | 519 (14.8) | 7785 (3.8) | <0.001 |
| Diabetes mellitus | 27873 (13.5) | 914 (26.0) | 26959 (13.3) | <0.001 |
Data presented as mean±standard deviation or n (%). AF: atrial fibrillation, BMI: body mass index, SBP: systolic blood pressure, DBP: diastolic blood pressure