Characteristics of cases with atrial fibrillation and controls from Denmark, 1995–2014
| Cases, number (%) | Controls, number (%) | |
|---|---|---|
| (n=88 612) | (n=886 120) | |
| Partner bereavement | ||
| Yes | 17 478 (19.72) | 168 940 (19.07) |
| No | 71 134 (80.28) | 717 180 (80.93) |
| Sex | ||
| Female | 41 764 (47.13) | 417 649 (47.13) |
| Male | 46 848 (52.87) | 468 480 (52.87) |
| Age (years) | ||
| 18–49 | 6678 (7.54) | 66 780 (7.54) |
| 50–59 | 11 299 (12.75) | 112 990 (12.75) |
| 60–69 | 20 875 (23.56) | 208 750 (23.56) |
| 70–79 | 25 808 (29.12) | 258 080 (29.12) |
| 80–100 | 23 952 (27.03) | 239 520 (27.03) |
| Civil status | ||
| Cohabitant* | 47 956 (54.12) | 472 338 (53.30) |
| Not cohabitant | 40 656 (45.88) | 413 782 (46.70) |
| Education (years) | ||
| <10 | 32 834 (37.05) | 313 635 (35.39) |
| 10–15 | 28 334 (31.98) | 280 719 (31.68) |
| >15 | 10 278 (11.60) | 103 633 (11.70) |
| Calendar time | ||
| 1995–2004 | 39 104 (44.13) | 391 040 (44.13) |
| 2004–2014 | 49 508 (55.87) | 495 080 (55.87) |
| Previous hospital diagnoses | ||
| Cardiovascular diseases | 29 895 (33.73) | 180 802 (20.40) |
| Hypertension | 17 406 (19.64) | 108 813 (12.28) |
| Ischaemic heart disease† | 16 680 (18.82) | 95 540 (10.78) |
| Cardiomyopathy | 909 (1.03) | 2115 (0.24) |
| Congestive heart failure | 6445 (7.27) | 26 414 (2,98) |
| Hyperthyroidism | 1787 (2.02) | 11 527 (1.30) |
| Diabetes mellitus | 11 009 (12.42) | 87 646 (9.89) |
| Medicine‡ | ||
| ACE or A2R inhibitors | 21 514 (24.28) | 151 337 (17.08) |
| β-blockers | 19 176 (21.64) | 90 784 (10.25) |
| Digoxin | 8071 (9.11) | 16 350 (1.85) |
| Calcium channel blockers | 4583 (5.17) | 18 930 (2.14) |
| Diuretics | 28 414 (32.07) | 181 005 (20.43) |
| Nitrates | 6415 (7.24) | 29 455 (3.32) |
| Thrombocyte function inhibitors | 23 441 (26.45) | 158 623 (17.90) |
| Lipid modifying agents | 12 718 (14.35) | 102 710 (11.59) |
| Vitamin K antagonists | 7744 (8.74) | 7801 (0.88) |
*Married or living with a cohabitant partner.
†Angina pectoris, acute myocardial infarction, chronic ischaemic heart disease.
‡Redeemed prescriptions 3 months before index date.
A2R, adenosine receptor.