CALCA and acute kidney injury: In the univariate analysis, the following variables were significantly associated with 30-day hospital mortality: chronic liver disease (OR 4.762, 95% CI 1.039–21.838; p = 0.045), AKI (OR 3.429, 95% CI 1.261–9.319; p = 0.016), BUN > 17.7 mg/dL (OR 12.076, 95% CI 1.565–93.199, p = 0.017), albumin < 3.3 g/dL (OR 0.276, 95% CI 0.103–0.741; p = 0.011), lactate > 2.24 mmol/L (OR 4.989, 95% CI 1.382–18.017, p = 0.014), PCT > 2.67 ng/mL (OR 9.953, 95% CI 1.288–76.924, p = 0.028), and PSS > 865 pg/mL (OR 19.148, 95% CI 3.999–91.693; p < 0.001).