Variables* Hazards ratio 95% C.I (lower) 95% C.I (upper) P value
Age at time of ICD implant 1.04 1.02 1.06 <0.001
Chronic kidney disease 2.93 1.89 4.51 <0.001
NYHA class 1.65 1.13 2.41 0.01
Coronary artery disease $ 1.88 1.11 3.17 0.02
Left ventricular ejection fraction 0.96 0.93 0.99 0.03
* Other nonsignificant variables in the model: male gender, diabetes mellitus, hypertension, chronic lung diseases, malignancy, alcohol abuse, history of ventricular tachycardia or sudden cardiac arrest and documented nonischemic triggers $ Coronary artery disease represents angiography-detected epicardial stenosis ≥50% ICD- Implantable Cardioverter-Defibrillator, NYHA- New York Heart Association classification * Other nonsignificant variables in the model: male gender, diabetes mellitus, hypertension, chronic lung diseases, malignancy, alcohol abuse, history of ventricular tachycardia or sudden cardiac arrest and documented nonischemic triggers $ Coronary artery disease represents angiography-detected epicardial stenosis ≥50% ICD- Implantable Cardioverter-Defibrillator, NYHA- New York Heart Association classification * Other nonsignificant variables in the model: male gender, diabetes mellitus, hypertension, chronic lung diseases, malignancy, alcohol abuse, history of ventricular tachycardia or sudden cardiac arrest and documented nonischemic triggers $ Coronary artery disease represents angiography-detected epicardial stenosis ≥50% ICD- Implantable Cardioverter-Defibrillator, NYHA- New York Heart Association classification * Other nonsignificant variables in the model: male gender, diabetes mellitus, hypertension, chronic lung diseases, malignancy, alcohol abuse, history of ventricular tachycardia or sudden cardiac arrest and documented nonischemic triggers $ Coronary artery disease represents angiography-detected epicardial stenosis ≥50% ICD- Implantable Cardioverter-Defibrillator, NYHA- New York Heart Association classification * Other nonsignificant variables in the model: male gender, diabetes mellitus, hypertension, chronic lung diseases, malignancy, alcohol abuse, history of ventricular tachycardia or sudden cardiac arrest and documented nonischemic triggers $ Coronary artery disease represents angiography-detected epicardial stenosis ≥50% ICD- Implantable Cardioverter-Defibrillator, NYHA- New York Heart Association classification