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Table 1 Characteristics of the total study population, AF patients and non-AF patients

From: Screening for atrial fibrillation with baseline and intermittent ECG recording in an out-of-hospital population

  Total population AF   Non-AF   P-value
    detection rate (%) 95% CI  
Total, n 928 35 3.8% (2.7–5.2) 893
Men, n (%) 462 (49.8%) 21 (60.0%) 4.6% (3.0–6.8) 441 (49.4%)   0.218
Women, n (%) 466 (50.2%) 14 (40.0%) 3.0% (1.8–5.0) 452 (50.6%)   
Age < 65 years, n (%) 242 (26.1%) 7 (20.0%) 2.9% (1. 4–5.8) 235 (26.3%)   0.404
Age ≥65 years, n (%) 686 (73.9%) 28 (80.0%) 4.1% (2.8–5.8) 658 (73.7%)   
CHADS2 = 1, n (%) 415 (44.7%) 13 (37.1%) 3.1% (1.7–5.1) 403 (45.1%)   0.351
CHADS2 ≥ 2, n (%) 513 (55.3%) 22 (62.9%) 4.3% (2.8–6.3) 490 (54.9%)   
CHF, n (%) 34 (3.7%) 1 (2.9%) 2.9% (0.7–14.9) 33 (3.7%)   0.796
HT, n (%) 838 (90.3%) 31 (88.6%) 3.7% (2.6–5.2) 807 (90.4%)   0.724
Age ≥75 y, n (%) 326 (35.0%) 13 (37.1%) 4.0% (2.6–7.1) 313 (35.1%)   0.799
DM, n (%) 293 (31.6%) 12 (34.3%) 4.1% (2.4–7.0) 281 (31.5%)   0.725
ES, n (%) 80 (8.6%) 4 (11.4%) 5.0% (2.0–12.2) 76 (8.5%)   0.546
IHD*, n (%) 184 (19.8%) 5 (14.3%) 2.7% (1.2–6.2) 179 (20.0%)   0.402
  Total population AF    Non-AF  
  Mean SD Range Mean SD Range Mean SD Range P-value
Number of ECG registrations, n 55.4 ± 11.2 1–125 50.3 ± 22.1 1–96 55.6 ± 10.5 20–125 0.442
Age, y 69.8 ± 9.4 33–89 70.7 ± 7.7 53–85 69.8 ± 9.4 33–89 0.679
  Median   Range Median   Range Median   Range  
CHADS 2 total 2   1–5 2   1–4 2   1–5 0.451
  1. CHF Congestive heart failure, HT Hypertension, DM Diabetes mellitus, ES Earlier stroke/TIA, IHD Ischemic heart disease (* not included in CHADS2). P-values compare AF with non-AF patients. Participants can have more than one co-morbidity.