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Figure 2 Plot of left ventricular ejection fraction (LVEF) in the defibrillator intervention (horizontal axis) and control arms (vertical axis) of the included randomized trials. Error bars are the reported standard deviations of LVEF in trial publications. Most of the points lie on the diagonal, suggesting that the trials were balanced for LVEF in the study arms. MADIT I and CABG Patch point estimates overlap. MUSTT and Wever et al. point estimates overlap. No standard deviation of LVEF was reported in MUSTT; only the point estimate is shown. AVID = Antiarrhythmics Versus Implantable Defibrillators study; CABG Patch = Coronary Artery Bypass Graft Patch Trial; CASH = Cardiac Arrest Study Hamburg; CAT = Cardiomyopathy Trial; CIDS = Canadian Implantable Defibrillator Study; MADIT = Multicenter Automatic Defibrillator Implantation Trial; MUSTT = Multicenter Unsustained Tachycardia Trial.