Table 1 Baseline characteristics by AKI stage
Variable | No AKI | AKI stage 1 | AKI stage 2 | AKI stage 3 |
|---|---|---|---|---|
N | 442 | 376 | 17 | 113 |
Age, years | 55.0 (16.8) | 56.8 (16.0) | 47.6 (18.0) | 53.0 (15.0) |
BMI, kg/m2 | 28.1 (18) | 32.0 (18.3) | 30 (6.3) | 32.4 (11.8) |
Creatinine, mg/dL | 0.86 (0.39) | 1.14 (0.53) | 0.74 (0.22) | 3.74 (3.08) |
SOFA score | 3 (2.5) | 4.7 (2.8) | 3.8 (2.7) | 7.5 (3.2) |
APACHE III | 42.2 (24.3) | 55.1 (27) | 53.6 (16.5) | 66.5 (34.8) |
Caucasian | 442 (100) | 376 (100) | 17 (100) | 113 (100) |
Female gender | 176 (39.8) | 119 (31.7) | 8 (47.1) | 41 (36.3) |
Source of ICU admission | ||||
 Medical | 228 (51.6) | 200 (53.2) | 8 (47.1) | 83 (73.5) |
 Surgical | 214 (48.4) | 176 (46.8) | 9 (52.9) | 30 (26.6) |
Death within 28Â days | 14 (3.2) | 63 (16.8) | 3 (17.7) | 31 (27.4) |
Comorbidities | ||||
 Chronic kidney disease | 12 (2.7) | 34 (9.0) | 0 (0) | 20 (17.7) |
 Diabetes mellitus | 86 (19.5) | 111 (29.5) | 7 (41.2) | 30 (26.6) |
 Cirrhosis | 36 (8.1) | 35 (9.3) | 3 (17.7) | 10 (8.9) |
 Current smoking | 264 (59.7) | 205 (54.5) | 9 (52.9) | 62 (54.9) |
Source of critical illness | ||||
 Pneumonia | 85 (19.2) | 87 (23.1) | 5 (29.4) | 17 (15.0) |
 Sepsis | 269 (60.9) | 269 (71.5) | 14 (82.4) | 80 (70.8) |
 Other | 74 (16.7) | 79 (21.0) | 3 (17.7) | 21 (18.6) |