Feature | Training and validation set (Hospital A) | Test set (Hospital B) | ||||
---|---|---|---|---|---|---|
PAF (n = 334) | Non-PAF (n = 437) | p value | PAF (n = 103) | Non-PAF (n = 497) | p value | |
Baseline characteristics | Â | Â | Â | Â | Â | Â |
Age, year | 58 (12.1) | 58 (10.8) | 0.75 | 69 (10.1) | 68 (11.4) | 0.42 |
Female gender, n (%) | 91 (27%) | 95 (21%) | 0.09 | 51 (49%) | 241 (48%) | 0.91 |
Chronic Heart Failure, n (%) | 21 (6%) | 70 (16%) |  < 0.001 | 20 (20%) | 97 (19%) | 0.99 |
Hypertension, n (%) | 164 (49%) | 205 (46%) | 0.56 | 59 (57%) | 281 (56%) | 0.91 |
Diabetes, n (%) | 49 (15%) | 79 (18%) | 0.2 | 24 (23%) | 121 (24%) | 0.89 |
Cerebrovascular accident (incl. TIA), n (%) | 39 (6%) | 54 (6%) | 0.71 | 21 (20%) | 112 (22%) | 0.69 |
Vascular disease, n (%) | 41 (12%) | 55 (13%) | 0.91 | 5 (4%) | 10 (2%) | 0.15 |
CHA2DS2Vasc Score | 1.7 (1.5) | 1.73 (1.6) | 0.94 | 2.74 (1.5) | 2.75 (1.5) | 0.91 |
Echocardiographic factors | Â | Â | Â | Â | Â | Â |
Left Atrium size, mm | 40.8 (5.8) | 44.4 (5.8) |  < 0.001 | 45.7 (8.1) | 53.4 (9.5) |  < 0.001 |
Left Atrium volume, mm3 | 35.1 (12.6) | 43.3 (13.9) |  < 0.001 | 42.8 (20.2) | 62.6 (37.9) |  < 0.001 |
Left Ventricular Ejection Fraction, % | 65.8 (39.6) | 60.8 (8.8) | 0.01 | 56.8 (13.6) | 58.8 (24.6) | 0.41 |