Table 1. Clinical characteristics of the internal and external cohorts.
| Clinical characteristics | Internal cohort | External cohort | |||
|---|---|---|---|---|---|
| Training (n=51) | Validation (n=13) | Test (n=16) | Test (n=48) | ||
| Age (years)* | 64±11 | 61±10 | 66±11 | 66±12 | |
| Sex (male), n (%) | 29 (56.9) | 6 (46.2) | 9 (56.3) | 24 (50.0) | |
| AF type (PAF), n (%) | 30 (58.8) | 11 (84.6) | 9 (56.3) | 28 (58.3) | |
| (PeAF), n (%) | 21 (41.2) | 2 (15.4) | 7 (43.8) | 20 (41.7) | |
| Diabetes, n (%) | 12 (23.5) | 2 (15.4) | 3 (18.8) | 8 (16.7) | |
| Hyperlipidemia, n (%) | 22 (43.1) | 3 (23.1) | 8 (50.0) | 26 (54.2) | |
| Hypertension, n (%) | 32 (62.7) | 6 (46.2) | 9 (56.3) | 32 (66.7) | |
| CAD, n (%) | 13 (25.5) | 2 (15.4) | 1 (6.3) | 7 (14.6) | |
*, values are presented as the mean ± SD. AF, atrial fibrillation; PAF, paroxysmal atrial fibrillation; PeAF, persistent atrial fibrillation; CAD, coronary artery disease; SD, standard deviation.