Table 1. Baseline characteristics and utilization of ICD.

Characteristics		ICD implant (n = 56)	No ICD (n = 429)	P value
Age, yr		62.9 ± 13.0	68.7 ± 13.9	0.003
Male		46 (82.1)	258 (60.1)	0.002
BMI		24.7 ± 4.1	23.2 ± 3.6	0.003
Hypertension		29 (51.8)	252 (58.7)	0.397
Diabetes mellitus		31 (55.4)	195 (45.5)	0.210
Ischemic heart disease		20 (35.7)	176 (41.0)	0.537
Valvular heart disease		3 (5.4)	46 (10.7)	0.309
Cerebrovascular disease		10 (17.9)	54 (12.6)	0.376
Chronic kidney disease		6 (10.7)	82 (19.1)	0.177
Malignancy		3 (5.4)	36 (8.4)	0.600
COPD		3 (5.4)	48 (11.2)	0.269
De novo heart failure		27 (48.2)	165 (38.5)	0.208
AF		9 (16.1)	104 (24.2)	0.233
Previous HF admission		22 (39.3)	190 (44.3)	0.571
ICU admission		26 (46.4)	204 (47.0)	1.000
Mechanical ventilation		6 (10.7)	43 (10.0)	1.000
LVEF, %		23.1 ± 7.7	27.9 ± 9.8	< 0.001
LA dimension, mm		47.9 ± 5.6	48.4 ± 9.1	0.536
Hemoglobin, g/dL		13.6 ± 2.2	12.4 ± 2.2	< 0.001
Serum creatinine, mg/dL		1.5 ± 1.2	1.6 ± 1.6	0.466
Discharge medication
	ACEi or ARB, %	50 (89.3)	328 (76.5)	0.045
	Beta-blocker, %	36 (64.3)	215 (50.1)	0.064
CRT		20 (35.7)	1 (0.2)	< 0.001
Time to f/u echocardiography		324 ± 120	321 ± 136	0.878

Data are expressed as mean ± standard deviation or number (%).

ICD = indicates implantable cardioverter-defibrillator, BMI = body mass index, COPD = chronic obstructive pulmonary disease, AF = atrial fibrillation, HF = heart failure, ICU = intensive care unit, LVEF = left ventricular ejection fraction, LA = left atrium, ACEi = angiotensin-converting-enzyme inhibitors, ARB = angiotensin receptor blocker, CRT = cardiac resynchronization therapy.