keywords *Defibrillators, Implantable Anti-Arrhythmia Agents/pharmacology/*therapeutic use Cardiomyopathies/drug therapy/*mortality/therapy Death, Sudden, Cardiac/prevention & control Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology/*therapeutic use Myocardial Ischemia/drug therapy/*mortality/therapy Risk Factors Tachycardia, Ventricular/*prevention & control Ventricular Fibrillation/*prevention & control