| Prevalence | |||
---|---|---|---|---|
Both sexes | Males | Females | P for male–female difference | |
n = 804 | n = 928 | |||
Ventricular arrhythmia | Â | Â | Â | Â |
 Any VPC | 79.8 | 87.8 | 72.9 |  < 0.001 |
 Freq VPC ≥ 10/h | 17.3 | 23.0 | 12.4 |  < 0.001 |
 Freq VPC ≥ 30/h | 9.4 | 12.4 | 6.7 |  < 0.001 |
 Freq VPC ≥ 100/h | 3.5 | 4.9 | 2.3 |  < 0.01 |
 Polymorphic VPC | 36.0 | 46.6 | 26.9 |  < 0.001 |
 VPC runs | 6.2 | 9.5 | 3.5 |  < 0.001 |