survival was strikingly related to arrhythmias : mortality was 11 % ( 1 of 9 ) in the simple ventricular arrhythmia subgroup and 59 % ( 13 of 22 ) in the complex ventricular arrhythmia subgroup ( p less than 0.025 by log-rank test ) .
C0003811
arrhythmias
C0085612
ventricular arrhythmia