Table 3. Mortality predictors by univariate and multivariate logistic regression.
| Variables | Univariate |
p-value | Multivariate |
p-value |
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | |||
| Male | 0.70 (0.36–1.34) | 0.277 | – | – |
| Age ≥ 94 years | 0.80 (0.41–1.54) | 0.501 | – | – |
| CKD | 0.45 (0.23–0.88) | 0.019 | 0.82 (0.33–2.04) | 0.669 |
| Hospital stay > 2 weeks | 0.64 (0.33–1.23) | 0.181 | – | – |
| Etiology | ||||
| Sepsis | 2.08 (1.08–4.02) | 0.029 | 0.62 (0.22–1.75) | 0.372 |
| Dehydration/hypovolemia | 0.17 (0.06–0.46) | <0.001 | 0.18 (0.04–0.77) | 0.020 |
| Heart failure | 1.05 (0.45–2.37) | 0.908 | – | – |
| KDIGO stage | ||||
| KDIGO 1 (reference) | 1 | – | – | – |
| KDIGO 2 | 1.08 (0.44–2.67) | 0.862 | – | – |
| KDIGO 3 | 3.76 (1.75–8.10) | <0.001 | 3.15 (1.17–8.47) | 0.023 |
| Charlson ≥ 7 | 2.38 (0.94–6.08) | 0.069 | 1.60 (0.50–5.17) | 0.431 |
| ICU admission | 13.05 (5.32–32.03) | <0.001 | 12.27 (3.03–49.74) | <0.001 |
| Mechanical ventilation | 5.95 (1.68–21.10) | 0.006 | 0.56 (0.08–4.18) | 0.562 |
| Vasopressor use | 6.21 (2.25–17.17) | <0.001 | 0.86 (0.14–5.40) | 0.864 |
| Oliguria | 10.69 (4.53–25.20) | <0.001 | 5.77 (1.98–16.85) | 0.001 |
| Renal Replacement Therapy | 7.58 (0.94–61.42) | 0.058 | 0.52 (0.04–6.11) | 0.601 |
Legend: CKD – chronic kidney disease; OR – Odds ratio; CI – confidence interval; ICU – intensive care unit; KDIGO – Kidney Disease Improving Global Outcomes. Variables included in the multivariate logistic regression: CKD, sepsis, dehydration/hypovolemia, KDIGO 3, Charlson ≥ 7, ICU admission, mechanical ventilation, vasopressor use, oliguria, renal replacement therapy.