Table 2.
Patient characteristics
| Variable | AKI (n=2515) | No AKI (n=5514) | P Value |
|---|---|---|---|
| Age, yr | 65.9±16 | 55.1±18.4 | <0.001 |
| Men | 1472 (58.5) | 3431 (62.2) | 0.002 |
| SAPS II score | 50.1±19.8 | 33.6±16.5 | <0.001 |
| Transfer from ward | 1214 (48.3) | 2390 (43.3) | <0.001 |
| McCabe score | |||
| 1 | 1507 (59.9) | 3928 (71.2) | <0.001 |
| 2 | 826 (32.9) | 1314 (23.8) | |
| 3 | 182 (7.2) | 272 (4.9) | |
| Admission category | |||
| Medical | 1747 (69.5) | 3885 (70.5) | <0.001 |
| Scheduled surgery | 471 (18.7) | 769 (13.9) | |
| Unscheduled surgery | 297 (11.8) | 860 (15.6) | |
| Chronic comorbidities | |||
| Heart disease | 364 (14.5) | 393 (7.16) | <0.001 |
| Respiratory disease | 313 (12.5) | 822 (14.9) | 0.003 |
| Liver disease | 170 (6.8) | 283 (5.1) | 0.003 |
| Immunodeficiency | 416 (16.5) | 669 (12.1) | <0.001 |
| Diabetes mellitus | 401 (15.9) | 519 (9.4) | <0.001 |
| Myeloma | 30 (1.2) | 20 (0.4) | <0.001 |
| ARDS | 832 (33.1) | 1047 (19) | <0.001 |
| Hemodynamic failure | 1127 (44.8) | 1576 (28.6) | <0.001 |
| Hepatic failure | 848 (33.7) | 1102 (20) | <0.001 |
| Sepsis | 1265 (50.3) | 2841 (51.5) | 0.3 |
| Nephrotoxic drugs | 1316 (52.3) | 3108 (56.4) | 0.001 |
| ICU mortality | 543 (21.6) | 291 (5.3) | <0.001 |
| Hospital mortality | 693 (27.6) | 448 (8.1) | <0.001 |
Data are reported as the mean±SD or n (%) unless otherwise specified. SAPS II, Simplified Acute Physiology Score version II (which can range from 0 to 155); ICU, intensive care unit.