Table 1.
Unmatched Baseline Characteristics
| Demographics | With Diabetes Mellitus | Without Diabetes Mellitus | ||||
|---|---|---|---|---|---|---|
| Overall (N=6540) | ICD (N=646) | No ICD (N=5894) | Overall (N=10 646) | ICD (N=1031) | No ICD (N=9615) | |
| Median age, y | 77.0 | 74.0 | 78.0 | 81.0 | 76.0 | 82.0 |
| Male, n (%) | 3712 (56.8) | 428 (66.3) | 3284 (55.7) | 5884 (55.3) | 704 (68.3) | 5180 (53.9) |
| Race, n (%) | ||||||
| Asian | 314 (4.8) | 29 (4.5) | 285 (4.8) | 437 (4.1) | 50 (4.8) | 387 (4.0) |
| Hispanic (any race) | 476 (7.3) | 47 (7.3) | 429 (7.3) | 427 (4.0) | 38 (3.7) | 389 (4.0) |
| Black | 925 (14.1) | 104 (16.1) | 8241 (13.9) | 1170 (11.0) | 109 (10.6) | 1061 (11.0) |
| White | 4713 (72.1) | 459 (71.1) | 4254 (72.2) | 8432 (79.2) | 823 (79.8) | 7609 (79.1) |
| Missing | 1.7 | 7 (1.1) | 105 (1.8) | 180 (1.7) | 11 (1.1) | 169 (1.8) |
| Median ejection fraction, % | 27.0 | 25.0 | 27.0 | 25.0 | 25.0 | 26.0 |
| Baseline medical history, n (%) | ||||||
| Anemia | 1155 (17.7) | 77 (11.9) | 1078 (18.3) | 1408 (13.2) | 90 (8.7) | 1318 (13.7) |
| Coronary disease | 3996 (61.1) | 438 (67.8) | 3558 (60.4) | 5434 (51.0) | 584 (56.6) | 4850 (50.4) |
| COPD or asthma | 1743 (26.7) | 167 (25.9) | 1576 (26.7) | 25 851 (24.2) | 241 (23.4) | 2340 (24.3) |
| CVA/TIA | 1123 (17.2) | 96 (14.9) | 1027 (17.4) | 1469 (13.8) | 126 (12.2) | 1343 (14.0) |
| Depression | 652 (10.0) | 45 (7.0) | 607 (10.3) | 810 (7.6) | 750 (7.8) | 750 (7.8) |
| Previous MI | 1604 (24.5) | 185 (28.6) | 1419 (24.1) | 2121 (19.9) | 289 (28.0) | 1832 (19.1) |
| Peripheral vascular disease | 1078 (16.5) | 88 (13.6) | 990 (16.8) | 1059 (9.9) | 84 (8.1) | 975 (10.1) |
| Prior heart failure | 3925 (60.0) | 395 (61.1) | 3530 (59.9) | 6046 (56.8) | 615 (59.7) | 5431 (56.5) |
| Hyperlipidemia | 3606 (55.1) | 395 (61.1) | 2311 (54.5) | 4317 (40.6) | 490 (47.5) | 3827 (39.8) |
| Hypertension | 5266 (80.5) | 517 (80.0) | 4749 (80.6) | 7307 (68.6) | 696 (67.5) | 6611 (68.8) |
| Renal insufficiency (SCr >2 mg/dL) | 1511 (23.1) | 120 (18.6) | 1391 (23.6) | 1626 (15.3) | 146 (14.2) | 1480 (15.4) |
| Patient laboratory values at admission | ||||||
| Median sodium, mEq/L | 138.0 | 138.0 | 138.0 | 138.0 | 139.0 | 138.0 |
| Median BUN, mg/dL | 27.0 | 25.0 | 28.0 | 24.0 | 23.0 | 24.0 |
| Median serum creatinine, mg/dL | 1.4 | 1.3 | 1.4 | 1.3 | 1.3 | 1.3 |
| Median BNP, pg/mL | 1130.0 | 967.5 | 1150.0 | 1290.0 | 1113.0 | 1306.0 |
| Median hemoglobin, g/dL | 11.9 | 12.5 | 11.9 | 12.4 | 12.9 | 12.3 |
| Medications at discharge, n (%) | ||||||
| ACE inhibitors | 3551 (54.3) | 395 (61.1) | 3156 (53.5) | 6010 (56.5) | 605 (58.7) | 5405 (56.2) |
| ASA | 3608 (55.2) | 375 (58.0) | 3233 (54.9) | 5387 (50.6) | 584 (56.6) | 4803 (50.0) |
| ARB | 1088 (16.6) | 132 (20.4) | 956 (16.2) | 9154 (86.0) | 189 (18.3) | 1342 (14.0) |
| β‐Blocker | 5723 (87.5) | 587 (90.9) | 5136 (87.1) | 9154 (86.0) | 925 (89.7) | 8229 (85.6) |
| Aldosterone antagonist | 1406 (21.5) | 172 (26.6) | 1234 (20.9) | 2251 (21.1) | 262 (25.4) | 1989 (20.7) |
| Hospital characteristics, n (%) | ||||||
| Hospital type (teaching) | 3871 (59.2) | 454 (70.3) | 3417 (58.0) | 6148 (57.7) | 738 (71.6) | 5410 (56.3) |
ACE indicates angiotensin‐converting enzyme; ARB, angiotensin receptor blockers; ASA, acetylsalicylic acid; BNP, brain natriuretic peptide; BUN, blood urea nitrogen; COPD, chronic obstructive pulmonary disorder; CVA, cerebrovascular accident; ICD, implantable cardioverter‐defibrillator; MI, myocardial infarction; SCr, serum creatinine; TIA, transient ischemic attack.