Table 1. Demographics of Cases and Controls at Time of ICD Implantation.

Patient Characteristics	Case Arm (N = 607)	Control Arm (N = 297)	p-value
Age at Visit	71.1±10.0	77.9±5.8	<0.0001**
Gender (Male)	474 (89%)	230 (84%)	0.059
Most Recent LVEF	34.3±12.9	36.7±13.0	0.012*
LVEF Not Available	43 (7%)	22 (7%)	0.891
Weight (Kilograms)	90.1±19.1	85.2±15.9	<0.0001**
Height (Meters)	1.76±0.09	1.74±0.09	0.010*
Body Mass Index	29.1±5.4	28.0±4.8	0.006**
RV - MI	44 (7%)	23 (8%)	0.788
LVA - MI	143 (24%)	89 (30%)	0.043*
LVP - MI	72 (12%)	19 (6%)	0.010*
Septal MI	37 (6%)	27 (9%)	0.128
Unknown MI Location	264 (43%)	118 (40%)	0.316
No Documented MI	100 (16%)	55 (19%)	0.453
Approximate Age at First MI	55.5±11.6	60.9±10.8	<0.0001**
Family History of Sudden Cardiac Arrest or Death	148 (37%)	85 (43%)	0.154
Earliest Age of SCA/SCD for Parents/Siblings	61.7±13.3	64.8±13.5	0.115