Table 2. Demographic data and clinical characteristics of total population, non-AKI and AKI groups according to ICU mortality.
| Total | Non-AKI group | AKI group | |||||||||||
| Survival(n = 337) | Non-survival(n = 206) | p-value | Survival(n = 266) | Non-survival(n = 90) | p-value | Survival(n = 71) | Non-survival(n = 116) | p-value | |||||
| Age (years) | 62.8±0.9 | 62.1±1.0 | NS (0.616) | 60.4±1.7 | 62.1±1.0 | NS (0.396) | 65.8±1.8 | 62.9±1.4 | NS (0.223) | ||||
| Male/Female | 218/82 | 172/71 | NS (0.802) | 194/72 | 66/24 | NS (0.981) | 52/19 | 78/38 | NS (0.387) | ||||
| Length of ICU stay (days) | 8.4±0.6 | 15.8±0.9 | <0.001 | 8.7±0.7 | 16.7±1.6 | <0.001 | 12.3±1.3 | 14.6±1.3 | NS (0.241) | ||||
| Length of hospital stay (days) | 23.4±1.2 | 19.2±1.2 | 0.016 | 22.5±1.3 | 17.3±1.6 | 0.012 | 34.3±2.9 | 14.7±1.3 | <0.001 | ||||
| Body weight on ICU admission (kg) | 63.3±0.8 | 61.0±0.9 | NS (0.055) | 63.9±0.9 | 59.5±1.4 | 0.011 | 60.8±1.5 | 61.7±1.3 | NS (0.666) | ||||
| GCS, ICU first day (points) | 12.7±0.2 | 9.9±0.3 | <0.001 | 12.7±0.3 | 10.8±0.5 | 0.001 | 11.9±0.5 | 8.9±0.5 | <0.001 | ||||
| MAP, ICU admission (mmHg) | 80.1±3.8 | 75.1±1.4 | NS (0.170) | 81.7±4.3 | 76.1±2.4 | NS (0.370) | 80.5±2.7 | 71.3±1.8 | 0.008 | ||||
| Serum creatinine, ICU first day (mg/dl) | 1.7±0.1 | 2.5±0.1 | <0.001 | 1.7±0.1 | 1.8±0.2 | NS (0.444) | 2.9±0.6 | 2.7±0.4 | NS (0.765) | ||||
| Arterial HCO3 −, ICU first day | 22.8±0.4 | 20.2±0.4 | <0.001 | 23.1±0.4 | 22.1±0.7 | NS (0.220) | 20.6±0.8 | 18.5±0.6 | 0.021 | ||||
| Bilirubin, ICU first day (mg/dl) | 1.8±0.2 | 7.4±0.7 | <0.001 | 2.3±0.3 | 5.2±0.8 | 0.001 | 2.1±0.6 | 9.3±1.1 | <0.001 | ||||
| Albumin, ICU first day (g/l) | 3.1±0.1 | 2.5±0.1 | <0.001 | 3.2±0.1 | 2.5±0.1 | <0.001 | 2.6±0.6 | 2.4±0.4 | 0.014 | ||||
| Hemoglobin, ICU first day (g/dl) | 11.1±0.2 | 9.6±0.1 | <0.001 | 11.2±0.2 | 9.7±0.3 | <0.001 | 10.2±0.3 | 9.4±0.2 | 0.022 | ||||
| Platelets, ICU first day (x103/µL) | 186.8±6.1 | 141.7±7.4 | <0.001 | 185.8±6.2 | 157.6±16.7 | NS (0.077) | 178.1±13.5 | 122.1±9.4 | 0.001 | ||||
| PaO2/FiO2, ICU first day (mmHg) | 301.5±8.6 | 252.4±9.9 | <0.001 | 308.2±9.3 | 233.9±16.7 | <0.001 | 283.5±16.7 | 246.5±13.2 | NS (0.086) | ||||
| Score systems | |||||||||||||
| APACHE II, ICU first day (mean ± SE) | 14.5±0.4 | 23.8±0.5 | <0.001 | 13.0±0.4 | 21.0±0.7 | <0.001 | 19.1±0.8 | 25.9±0.7 | <0.001 | ||||
| APACHE III, ICU first day (mean ± SE) | 54.3±1.5 | 94.1±1.9 | <0.001 | 54.5±1.6 | 82.2±2.9 | <0.001 | 75.5±2.6 | 106.6±2.8 | <0.001 | ||||
| SOFA, ICU first day (mean ± SE) | 5.3±0.2 | 10.1±0.3 | <0.001 | 5.0±0.2 | 8.2±0.4 | <0.001 | 7.7±0.4 | 12.2±0.3 | <0.001 | ||||
| RIFLE, ICU first day (mean ± SE) | 0.5±0.1 | 1.4±0.1 | <0.001 | – | – | – | 1.5±0.1 | 2.3±0.1 | <0.001 | ||||
Abbreviation: AKI, acute kidney injury; NS, not significant; ICU, intensive care unit; SE, standard error; GCS, Glasgow coma scale; MAP, mean arterial pressure; PaO2, arterial partial pressure of oxygen; FiO2, fraction of inspired oxygen; APACHE, Acute Physiology and Chronic Health Evaluation; SOFA, sequential organ failure assessment.