Table 1.

Demographic and Clinical Characteristics of Enrolled Patients Ascertained From Electronic Medical Records at Baseline

Characteristic	Baseline (N=51)N (%)
Demographics
Age (y), mean±SD	71.1±8.3
Men	38 (74.5%)
White Race	41 (80.4%)
Religion
Christian	33 (64.7%)
Jewish	6 (11.8%)
Other	12 (23.5%)
Cardiac conditions
Coronary artery disease	32 (62.7%)
Congestive heart failure	42 (82.4%)
New York Heart Association Class
I	23 (45.1%)
II	14 (27.5%)
III	13 (25.5%)
IV	1 (2.0%)
Atrial fibrillation	22 (43.1%)
History of sustained ventricular tachycardia/fibrillation	21 (41.2%)
Noncardiac conditions
Diabetes mellitus	23 (45.1%)
Chronic obstructive lung disease	8 (15.7%)
History of malignancy	1 (2.0%)
Chronic kidney disease	47 (92.2%)
Diagnostic studies
Left ventricular ejection fraction (%), mean±SD	30.0±13.1
Glomerular filtration rate (mL/min), mean±SD	44.4±17.2
Device history
Duration of implant (y), mean±SD	5.5±4.4
Cardiac resynchronization therapy	12 (23.5%)
Primary prevention implant	37 (72.5%)
Appropriate implantable cardioverter‐defibrillator therapies prior to enrollment	15 (29.4%)
Implantable cardioverter‐defibrillator generator replaced prior to enrollment	23 (45.1%)