Table 1. Demographic data.
| Data available | All patients (N = 653) | No AKI (n = 353) | AKI (n = 300) | p-value | |
|---|---|---|---|---|---|
| Age (Y) | 653 | 63 (53–74) | 63 (51–72) | 64 (54–75) | 0.055 |
| Gender (male) | 653 | 418 (64) | 234 (66) | 184 (61) | 0.192 |
| BMI (kg/m2) | 651 | 26.5 (23.5–29.7) | 26.0 (23.1–29.2) | 27.3 (24.4–30.8) | 0.001 |
| Co–morbidities | |||||
| Arterial hypertension | 651 | 323 (50) | 163 (46) | 160 (53) | 0.084 |
| Diabetes | 653 | 150 (23) | 68 (19) | 82 (27) | 0.015 |
| Arteriosclerosis | 648 | 76 (12) | 35 (10) | 41 (14) | 0.178 |
| COPD | 649 | 64 (10) | 45 (13) | 19 (6) | 0.008 |
| Chronic liver disease | 647 | 42 (7) | 18 (5) | 24 (8) | 0.151 |
| Systolic heart failure | 649 | 64 (10) | 40 (11) | 24 (8) | 0.186 |
| Thromboembolism | 649 | 42 (7) | 25 (7) | 17 6) | 0.524 |
| Rheumatic disease | 648 | 43 (7) | 25 (7) | 18 (6) | 0.636 |
| Baseline plasma creatinine (μmol/l) | 653 | 79.0 (67.0–93.3) | 80.0 (68.0–94.0) | 77.2 (66.5–93.0) | 0.341 |
| Admission | |||||
| Emergency | 648 | 635 (98) | 342 (98) | 293 (98) | 1.000 |
| Operative | 652 | 154 (24) | 87 (25) | 67 (22) | 0.518 |
| Cardiac surgery | 653 | 12 (2) | 8 (2) | 4 (1) | 0.561 |
| SAPS II score 24h without renal and age points | 649 | 25 (18–33) | 24 (17–30) | 26 (20–37) | <0.0001 |
| White blood cells, maximum (109/l) | 584 | 11.9 (7.7–12.7) | 11.7 (7.9–16.4) | 12.2 (7.5–17.8) | 0.450 |
| Platelets, minimum (109/l) | 632 | 189.5 (128.0–265.0) |
196.0 (141.0–268.0) |
184.0 (111.0–261.0) |
0.040 |
| Plasma bilirubin, maximum (μmol/l) | 305 | 14.0 (7.0–25.5) | 13.0 (7.0–22.0) | 14.0 (8.0–32.0) | 0.150 |
Continuous variables distribute non–normally and are reported as median (interquartile range) and categorical variables as number (percentage). Abbreviations: AKI, acute kidney injury; BMI, body mass index; COPD, chronic obstructive pulmonary disease; SAPS, simplified acute physiology score.