Table 1 Descriptive statistics for individuals with lone atrial fibrillation (LAF) in the Swedish population (1987–2009)
|  | Individuals diagnosed with LAF and with both parents living in Sweden sometime during 1987–2009 (n=16,160) | Individuals diagnosed with LAF and with at least one sibling living in Sweden sometime during 1987–2009 (n=20,373) | ||
|---|---|---|---|---|
| Â | Recurrence | No Recurrence | Recurrence | No Recurrence |
N | 7,375 | 8,785 | 9,909 | 10,464 |
AF parents | 26.9% | 21.6% | Â | Â |
LAF parents | 2.7% | 2.5% | Â | Â |
AF siblings | Â | Â | 11.6% | 7.7% |
Men | 79.0% | 75.8% | 77.2% | 74.1% |
Age at diagnosis of LAF, mean (SD) | 48.3 (10.1) | 46.3 (11.1) | 50.5 (9.0) | 48.6 (10.7) |