Table 1 Baseline characteristics
|  | Overall (n = 258) | 28-day survival | P | |
|---|---|---|---|---|
Survivor (n = 101) | Non-survivor (n = 157) | |||
Demographic data | ||||
 Age, years | 64.7 ± 15.8 | 64.0 ± 17.3 | 65.1 ± 14.8 | 0.59 |
 Male, n (%) | 165 (64.0) | 66 (65.3) | 99 (63.1) | 0.41 |
 ICU admission body weight, kg | 61.2 ± 12.2 | 61.7 ± 12.3 | 60.8 ± 12.3 | 0.59 |
 ICU admission BMI, kg/m2 | 22.9 ± 12.2 | 23.2 ± 4.0 | 22.7 ± 3.8 | 0.27 |
Cause of AKI, n (%) | 0.67 | |||
 Septic | 157 (60.9) | 58 (57.4) | 99 (63.1) |  |
 Cardiogenic | 28 (10.9) | 13 (12.9) | 15 (9.6) |  |
 Ischemic | 52 (20.2) | 23 (22.8) | 29 (18.5) |  |
 Postoperative | 7 (2.7) | 1 (1.0) | 6 (3.8) |  |
 Drug induced | 11 (4.3) | 5 (5.0) | 6 (3.8) |  |
 Others | 3 (1.2) | 1 (1.0) | 2 (1.3) |  |
Comorbidities, n (%) | ||||
 Hypertension | 125 (48.4) | 58 (57.4) | 67 (42.7) | 0.01 |
 Diabetes | 93 (36.0) | 42 (41.6) | 51 (32.5) | 0.09 |
 CVDs | 81 (31.4) | 32 (31.7) | 49 (31.2) | 0.52 |
 Malignancy | 23 (9.0) | 4 (4.0) | 19 (12.1) | 0.02 |
Charlson Comorbidity Index | 6.5 ± 2.4 | 6.4 ± 2.3 | 6.5 ± 2.5 | 0.59 |
SOFA score | 11.6 ± 3.9 | 9.8 ± 3.8 | 12.8 ± 3.5 | < 0.001 |
APACHE II score | 26.0 ± 6.7 | 22.9 ± 6.6 | 28.1 ± 6.0 | < 0.001 |
Glasgow Coma Score | 6.3 ± 4.0 | 8.0 ± 4.3 | 5.2 ± 3.4 | < 0.001 |
Mechanical ventilation needs, n (%) | 203 (79.9) | 69 (69.0) | 134 (87.0) | < 0.001 |
 FiO2 | 0.5 ± 0.2 | 0.4 ± 0.2 | 0.6 ± 0.2 | 0.004 |