Table 2.
Characteristics of the Incident Atrial Fibrillation Events (n=1662) During Follow‐Up: The Tromsø Study
| No VTE, % (n) | VTE, % (n) | |
|---|---|---|
| Atrial fibrillation | 1612 | 50 |
| Paroxystic/persistent* | 40.5 (653) | 50.0 (25) |
| Permanent | 37.0 (596) | 40.0 (20) |
| Post‐operative AF* | 9.8 (158) | 2.0 (1) |
| Post‐MI AF* | 5.0 (80) | — |
| Cardiac risk factors | ||
| Coronary artery disease* | 42.0 (677) | 26.0 (13) |
| Heart failure* | 16.1 (259) | 16.0 (8) |
| Valvular heart disease | 15.7 (253) | 16.0 (8) |
| Structural heart changes | 8.2 (132) | 8.0 (4) |
| No known heart disease | 34.6 (557) | 48.0 (24) |
AF indicates atrial fibrillation; ICD, International Classification of Disease; MI, myocardial infarction.
*
Atrial fibrillation events were characterized as paroxystic/persistent or permanent when possible.
*
Within 28 days of surgery.
*
Within 28 days of an acute myocardial infarction.
*
Previous myocardial infarction and/or atherosclerosis verified by coronary angiography.
*
Consensus diagnosis based on information from medical journals, radiology reports, echocardiographic findings, and ICD‐10 codes.