Table 1.
Patient characteristics by acute kidney injury (AKI) status at intensive care unit (ICU) admission
| Patient demographics | All patients (N=361) |
Missing data (no. of patients) | AKI (n=114) |
No AKI (n=242) |
P value (AKI vs no AKI) |
| Age in years, median (IQR) | 63.6 (53.5–72.5) | – | 65.6 (58.4–73.6) | 61.6 (52.0–72.3) | 0.003 |
| Male | 261 (72.3%) | – | 86 (75.4%) | 172 (71.1%) | 0.233 |
| Female | 100 (27.7%) | – | 28 (24.6%) | 70 (28.9%) | 0.233 |
| BMI, median (IQR) | 27.7 (24.8–32.0) | 141 | 27.3 (23.0–30.6) | 28.3 (25.1–32.4) | 0.132 |
| BMI>30 | 83 (37.7%) | 141 | 21 (31.8%) | 61 (40.4%) | 0.147 |
| Current smoker | 9 (2.5%) | – | 3 (2.6%) | 6 (2.5%) | 0.592 |
| Comorbidity/ies | 246 (68.1%) | – | 81 (71.1%) | 161 (66.5%) | 0.233 |
| 1 | 141 (39.1%) | – | 44 (38.6%) | 94 (38.8%) | 0.530 |
| >2 | 105 (29.1%) | – | 37 (32.5%) | 67 (27.7%) | 0.212 |
| CVD | 158 (43.8%) | – | 58 (50.9%) | 98 (40.5%) | 0.042 |
| DM | 74 (20.5%) | – | 23 (20.2%) | 50 (20.7%) | 0.518 |
| Asthma | 55 (15.2%) | – | 15 (13.2%) | 39 (16.1%) | 0.288 |
| CPD | 37 (10.2%) | – | 14 (12.3%) | 23 (9.5%) | 0.266 |
| Immunocompromised | 20 (5.5%) | – | 5 (4.4%) | 14 (5.8%) | 0.394 |
| Cancer | 17 (4.7%) | – | 6 (5.3%) | 11 (4.5%) | 0.476 |
| CND | 12 (3.3%) | – | 5 (4.4%) | 7 (2.9%) | 0.329 |
| Liver disease | 3 (0.8%) | – | 1 (0.9%) | 2 (0.8%) | 0.687 |
| ACEi/ARB | 83 (23.4%) | 7 | 34 (30.6%) | 47 (19.7%) | 0.019 |
ACEi, angiotensin-converting enzyme inhibitor; ARB, angiotensin II receptor blocker; BMI, body mass index; CND, chronic neurological disease; CPD, chronic pulmonary disease; CVD, cardiovascular disease; DM, diabetes mellitus.