Table I.
Baseline patient characteristics
| No IABP [n=1,544,312] |
IABP [n=8290] |
P-value | |
|---|---|---|---|
| Age, mean ± SD | 64.2 ± 12.2 | 65. 1 ± 12.9 | <.0001 |
| Women, total (%) | 528159 (34.20) | 2809 (33.89) | 0.5465 |
| Race, total (%) | <.0001 | ||
| White | 921092 (81.91) | 5054 (83.91) | |
| Black | 75408 (6.71) | 290 (4.81) | |
| Hispanic | 68547 (6.10) | 279 (4.63) | |
| Asian | 19291 (1.72) | 121 (2.01) | |
| Native American | 4054 (0.36) | 27 (0.45) | |
| Other | 36160 (3.22) | 252 (4.18) | |
| Died during hospitalization, total (%) | 11054 (0.72) | 1683 (20.31) | <.0001 |
| Length of stay, mean ± SD | 2.77 ± 3.09 | 8.39 ± 8.46 | <.0001 |
| Financial cost, mean ($) ± SD | 39,866 ± 29,495 | 86,061 ± 89,133 | <.0001 |
| Hospital, total (%) | <.0001 | ||
| Non-teaching | 647992 (41.96) | 3118 (37.61) | |
| Teaching | 896320 (58.04) | 5172 (62.39) | |
| Location, total (%) | <.0001 | ||
| Rural | 67329 (4.36) | 657 (7.93) | |
| Urban | 1476983 (95.64) | 7633 (92.07) | |
| Medical history, total (%) | |||
| Diabetes mellitus | 446476 (28.91) | 2096 (25.28) | <.0001 |
| Hypertension | 977347 (63.29) | 3622 (43.69) | <.0001 |
| AMI | 528589 (34.23) | 7012 (84.58) | <.0001 |
| CAD | 1485068 (96.16) | 7082 (85.43) | <.0001 |
| CHF | 170801 (11.06) | 3266 (39.40) | <.0001 |
| Occlusion or stenosis of precerebral arteries | 23434 (1.52) | 82 (0.99) | <.0001 |
| Other and ill-defined cerebrovascular disease | 3280 (0.21) | <11* (0.11) | 0.0403 |
| TIA | 2877 (0.19) | 12 (0.14) | 0.3814 |
| PVD | 105166 (6.81) | 396 (4.78) | <.0001 |
| A/V/P artery aneurysm/embolism/thrombosis | 23369 (1.51) | 160 (1.93) | 0.0019 |
| Any malignancy | 95795 (6.20) | 499 (6.02) | 0.4890 |
| COPD/Bronchiectasis | 150720 (9.76) | 1079 (13.02) | <.0001 |
| SLE/Connective Tissue Disease | 47201 (3.06) | 205 (2.47) | 0.0021 |
| Cardiac and circulatory congenital anomalies | 4292 (0.28) | 36 (0.43) | 0.0071 |
| Shock | 10777 (0.70) | 3158 (38.09) | <.0001 |
| Coagulation and hemorrhagic disorders | 20893 (1.35) | 541 (6.53) | <.0001 |
| Heart valve disorders | 109804 (7.11) | 994 (11.99) | <.0001 |
| Peri- endo- and myocarditis, cardiomyopathy | 45014 (2.91) | 585 (7.06) | <.0001 |
| Pulmonary heart disease | 21571 (1.40) | 232 (2.80) | <.0001 |
| Chronic renal failure | 44368 (2.87) | 281 (3.39) | 0.0050 |
| Disorders of lipid metabolism | 840840 (54.45) | 2561 (30.89) | <.0001 |
| Anemia | 85427 (5.53) | 859 (10.36) | <.0001 |
| Tobacco use | 259393 (16.80) | 1144 (13.80) | <.0001 |
| History of tobacco use | 148834 (9.64) | 386 (4.66) | <.0001 |
| Ischemic CVD | 25702 (1.66) | 149 (1.80) | 0.3451 |
| Hemorrhagic CVD | 694 (0.04) | 21 (0.25) | <.0001 |
| Acute CVD | 8597 (0.56) | 147 (1.77) | <.0001 |
| Atrial fibrillation/flutter | 121408 (7.86) | 1436 (17.32) | <.0001 |
| Procedure | |||
| DES | 632,917 (40.98) | 1,713 (20.66) | <.0001 |
| BMS | 783,718 (50.75) | 5,143 (62.04) | <.0001 |
| CABG | 1,777 (0.12) | 892 (10.76) | <.0001 |
| VAD | 110 (0.01) | <11* (0.04) | 0.0020 |
AMI indicates acute myocardial infarction; CAD, coronary artery disease; CHF, congestive heart failure; TIA, transient ischemic attack; PVD, peripheral vascular disease; A/V/P, Aortic/peripheral/visceral; COPD, chronic obstructive pulmonary disease; SLE, systemic lupus erythematosus; CVD, cerebrovascular disease; CABG, coronary artery bypass graft; VAD, ventricular assist device
*
HCUP DUA prohibits the reporting of fewer than 11 observations