Table 1.

Patient characteristics by presence of an ICD before propensity match

FactorPatients (n)Non-ICD Group (n=9435)ICD Group (n=1053)P Value
Age (yr)10,48872.0±11.769.6±11.5<0.001
Men10,4884770 (50.6)748 (71.0)<0.001
Black race10,4881526 (16.2)173 (16.4)0.83
BMI (kg/m2)10,18229.2±6.628.9±5.90.21
BMI group (kg/m2)10,488<0.001
 <18.5129 (1.4)6 (0.57)
 18.5–24.92370 (25.1)282 (26.8)
 25–29.93263 (34.6)368 (34.9)
 ≥303372 (35.7)392 (37.2)
 Missing301 (3.2)5 (0.47)
eGFR (ml/min per 1.73 m2)10,48844.6±12.043.5±11.30.004
CKD stage, by eGFR (ml/min per 1.73 m2)10,488<0.001
 45–595408 (57.3)532 (50.5)
 30–442751 (29.2)374 (35.5)
 15–291081 (11.5)141 (13.4)
 <15195 (2.1)6 (0.57)
Diabetes10,4882136 (22.6)322 (30.6)<0.001
Hypertension10,4888041 (85.2)802 (76.2)<0.001
Congestive heart failure10,4881349 (14.3)698 (66.3)<0.001
Coronary artery disease10,4882875 (30.5)602 (57.2)<0.001
Cerebrovascular disease10,4881165 (12.3)124 (11.8)0.59
Peripheral vascular disease10,488322 (3.4)54 (5.1)0.01
Coronary revascularization10,488590 (6.3)181 (17.2)<0.001
Ventricular arrhythmia10,48841 (0.43)72 (6.8)<0.001
Albumin (g/dl) 89674.0±0.524.1±0.480.001
Hemoglobin (g/dl) 959512.4±1.912.6±1.9<0.001
Malignancy10,4882284 (24.2)145 (13.8)<0.001
LVEF (%) 10,48853.6±10.824.0±8.3<0.001
Use of ACEIs/ARBs10,4886600 (70.0)989 (93.9)<0.001
Use of statins10,4885790 (61.4)840 (79.8)<0.001
Use of β-blockers10,4886673 (70.7)996 (94.6)<0.001
Smoking status10,4880.72
 No7670 (81.3)855 (81.2)
 Yes591 (6.3)72 (6.8)
 Missing1174 (12.4)126 (12.0)
Insurance group10,4880.84
 Private1671 (17.7)182 (17.3)
 Medicare/Medicaid7545 (80.0)844 (80.2)
 Missing219 (2.3)27 (2.6)
  • Data are given as n (%) or means±SD unless otherwise indicated. ICD, implantable cardioverter-defibrillator; BMI: body mass index; LVEF, left ventricular ejection fraction; ACEI/ARB, angiotensin-converting enzyme inhibitor/angiotensin receptor blocker.