Table 1.
Baseline patient characteristics.
| Characteristic | All patients (n=262) | Atrial fibrillation (n=100) | Normal sinus rhythm (n=113) | Other arrhythmias (n=45) | Unreadable ECGa (n=4) | ||||||
| Age (years), mean (SD) | 67.7 (14.8) | 74.3 (12.3) | 61.8 (14.3) | 66.9 (15.2) | 78.8 (12.5) | ||||||
| Height (cm), mean (SD) | 169.2 (9.2) | 168.8 (9.4) | 169.7 (9.2) | 169.3 (9.0) | 163.8 (7.8) | ||||||
| Weight (kg), mean (SD) | 78.9 (17.6) | 79.1 (19.1) | 79.1 (15.1) | 78.9 (20.1) | 67.8 (18.7) | ||||||
| BMIb (kg/m2), mean (SD) | 27.5 (5.7) | 27.6 (6.0) | 27.5 (5.1) | 27.5 (6.4) | 25.3 (6.5) | ||||||
| Sex, n (%) |
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Female | 102 (38.9) | 42 (42.0) | 39 (34.5) | 18 (40.0) | 3 (75.0) | |||||
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Male | 160 (61.1) | 58 (58.0) | 74 (65.5) | 27 (60.0) | 1 (25.0) | |||||
| Patient follow-up at site during study procedure, n (%) |
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In-patient | 205 (78.2) | 91 (91.0) | 72 (63.7) | 38 (84.4) | 4 (100) | |||||
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Out-patient | 57 (21.8) | 9 (9.0) | 41 (36.3) | 7 (15.6) | 0 (0.0) | |||||
| Cardiovascular medical history, n (%) |
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Atrial fibrillation | 122 (46.6) | 91 (91.0) | 11 (9.7) | 19 (42.2) | 1 (25.0) | |||||
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Valvular heart disease with or without intervention before inclusion | 46 (17.6) | 25 (25.0) | 12 (10.6) | 8 (17.8) | 1 (25.0) | |||||
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Coronary artery disease with or without coronary artery bypass grafting before inclusion | 72 (27.5) | 27 (27.0) | 30 (26.5) | 14 (31.1) | 1 (25.0) | |||||
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Heart failure | 26 (9.9) | 20 (20.0) | 3 (2.7) | 3 (6.7) | 0 (0.0) | |||||
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Myocardial infarction or ischemic cardiopathy | 31 (11.8) | 17 (17.0) | 9 (8.0) | 5 (11.1) | 0 (0.0) | |||||
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Transient ischemic attack or stroke | 12 (4.6) | 9 (9.0) | 2 (1.8) | 1 (2.2) | 0 (0.0) | |||||
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Peripheral arterial obstructive disease | 18 (6.9) | 7 (7.0) | 8 (7.1) | 3 (6.7) | 0 (0.0) | |||||
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Abdominal aortic aneurysm | 4 (1.5) | 1 (1.0) | 3 (2.7) | 0 (0.0) | 0 (0.0) | |||||
| Cardiovascular risk factors, n (%) |
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Hypertension | 135 (51.5) | 60 (60.0) | 51 (45.1) | 23 (51.1) | 1 (25.0) | |||||
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Dyslipidemia | 90 (34.4) | 36 (36.0) | 39 (34.5) | 15 (33.3) | 0 (0.0) | |||||
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Former or current smoker | 77 (29.4) | 28 (28.0) | 36 (31.9) | 13 (28.9) | 0 (0.0) | |||||
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Overweight | 70 (26.7) | 27 (27.0) | 32 (28.3) | 9 (20.0) | 2 (50.0) | |||||
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Obesity | 42 (16.0) | 14 (14.0) | 22 (19.5) | 6 (13.3) | 0 (0.0) | |||||
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Diabetes | 57 (21.8) | 23 (23.0) | 23 (20.4) | 11 (24.4) | 0 (0.0) | |||||
| Position during ECG recording, n (%) |
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Supine | 115 (43.9) | 44 (44.0) | 50 (44.2) | 18 (40.0) | 3 (75.0) | |||||
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Sitting | 147 (56.1) | 56 (56.0) | 63 (55.8) | 27 (60.0) | 1 (25.0) | |||||
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Wrist |
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Left | 179 (68.3) | 66 (66.0) | 82 (72.6) | 30 (66.7) | 1 (25.0) | |||||
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Right | 83 (31.7) | 34 (34.0) | 31 (27.4) | 15 (33.3) | 3 (75.0) | |||||
| Skin type, n (%) |
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White | 204 (77.9) | 82 (82.0) | 84 (74.3) | 35 (77.8) | 3 (75.0) | |||||
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Mediterranean/Arabic | 35 (13.4) | 15 (15.0) | 13 (11.5) | 6 (13.3) | 1 (25.0) | |||||
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Black | 23 (8.8) | 3 (3.0) | 16 (14.2) | 4 (8.9) | 0 (0.0) | |||||
aECG: electrocardiogram.
bBMI: body mass index.