Table 1.
Characteristics of subjects who did and did not suffer dialysis-requiring ARF during hospitalization
| Characteristic | Subjects who developed ARF during hospitalization (N=1764) | Subjects who did not develop ARF during hospitalization (N=600 820) |
|---|---|---|
| Mean age at hospitalization±s.d., years | 65.4±14.1 | 57.3±17.2 |
| Women, n (%) | 735 (41.7%) | 340 940 (56.8 %) |
| Race/ethnicity | ||
| White/European | 1086 (61.6%) | 385 314 (64.1%) |
| Black/African | 251 (14.2%) | 48 257 (8.0%) |
| American | ||
| Hispanic | 147 (8.3%) | 41 194 (6.9%) |
| Asian/Pacific Islander | 167 (9.5%) | 55 778 (9.3%) |
| Native American/Mixed | 101 (5.7%) | 30 369 (5.1%) |
| Unknown | 12 (0.7%) | 39 908 (6.6%) |
| Selected medical history | ||
| Diabetes mellitus | 851 (48.2%) | 87 133 (14.5%) |
| Diagnosed hypertension | 1268 (71.9%) | 221 422 (36.9%) |
| Documented proteinuria | 969 (54.9%) | 65 679 (10.9%) |
| Chronic heart failure | 809 (45.9%) | 31 754 (5.3%) |
| Chronic liver disease | 111 (6.3%) | 10 903 (1.8%) |
| Index hospitalization features | ||
| Hyperbilirubinemia | 347 (19.7%) | 6419 (1.1%) |
| Intensive care unit stay | 1101 (62.4%) | 34 077 (5.7%) |
| Sepsis | 488 (27.7%) | 6879 (1.1%) |
| Mechanical ventilation | 551 (31.2%) | 6345 (1.1%) |
| Diagnostic cardiac catheterization involving intravenous contrast | 127 (7.2%) | 24 024 (4.0%) |
| Percutaneous coronary intervention | 31 (1.8%) | 4491 (0.8%) |
| Coronary artery bypass graft surgery | 52 (2.9%) | 3144 (0.5%) |
| Other cardiac surgery | 39 (2.2%) | 650 (0.1%) |
ARF, acute renal failure.
P-value for all comparisons <0.0001.