Table 1

Comparison of Baseline Characteristics of Patients With Ischemic and Nonischemic Cardiomyopathy

Ischemic Cardiomyopathy
(n = 92,361)
Nonischemic Cardiomyopathy
(n = 63,652)
p Value
Demographics
 Age, yrs76 (66–84)72 (57–84)<0.0001
 Race/ethnicity<0.0001
 White68,633 (74.8)38,639 (61.2)
 Black12,789 (13.9)16,384 (25.9)
 Hispanic6,966 (7.6)5,297 (8.4)
 Asian1,097 (1.2)941 (1.5)
 Other2,296 (2.5)1,906 (3.0)
 Women41,040 (44.4)36,186 (56.9)<0.0001
 Insurance<0.0001
 Medicare53,595 (61.9)30,830 (52.0)
 Medicaid7,447 (8.6)6,656 (11.2)
 Other23,087 (26.6)17,399 (29.3)
 None2,469 (2.9)4,461 (7.5)
Medical history
 COPD/asthma30,415 (33.1)17,673 (28.3)<0.0001
 Atrial fibrillation24,430 (36.2)28,706 (33.0)<0.0001
 Diabetes33,047 (36.0)20,089 (32.1)<0.0001
 Hypertension72,705 (79.1)48,123 (77.0)<0.0001
 Hyperlipidemia52,053 (56.6)20,796 (33.3)<0.0001
 Stroke/TIA16,215 (17.7)7,398 (11.8)<0.0001
 PVD15,809 (17.2)4,183 (6.7)<0.0001
 Renal insufficiency22,651 (24.7)11,239 (18.0)<0.0001
 Anemia20,301 (22.1)11,298 (18.1)<0.0001
 Smoking14,434 (15.8)11,354 (18.0)<0.0001
 CRT-D4,400 (4.8)1,374 (2.2)<0.0001
 CRT-P595 (0.7)246 (0.4)<0.0001
 ICD only12,472 (13.6)3,940 (6.3)<0.0001
Admission characteristics
 SBP, mm Hg137 (118–158)140 (120–163)<0.0001
 Heart rate, beats/min80 (70–94)86 (73–101)<0.0001
 BMI, kg/m228 (24–33)29 (24–36)<0.0001
 Ejection fraction, %38 (25–52)45 (25–56)<0.0001
 Ejection fraction <40%45,350 (51.1)25,474 (42.1)<0.0001
 BNP, pg/dl850 (407–1,691)725 (332–1,521)<0.0001
 Creatinine, mg/dl1.4 (1.1–1.9)1.2 (0.9–1.8)<0.0001
Hospital characteristics
 Rural4,965 (5.4)3,035 (4.8)<0.0001
 Region<0.0001
 West10,626 (11.5)9,823 (15.4)
 South31,073 (33.6)21,057 (33.1)
 Midwest23,362 (25.3)15,595 (24.5)
 Northeast27,300 (39.6)17,177 (27.0)
 Academic hospitals57,839 (62.7)40,717 (64.0)<0.0001
 Number of beds410 (250–593)394 (251–566)<0.0001

Values are median (interquartile range) or n (%).

BMI = body mass index; BNP = brain natriuretic peptide; COPD = chronic obstructive pulmonary disease; CRT-D = cardiac resynchronization therapy–defibrillator; CRT-P = cardiac resynchronization therapy–pacemaker; ICD = implantable cardioverter-defibrillator; NICM = nonischemic cardiomyopathy; PVD = peripheral vascular disease; SBP = systolic blood pressure; TIA = transient ischemic attack.

  • Includes all patients with NICM irrespective of whether further etiology was classified.