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Table 2 Univariable Cox proportional hazards model of liver parameters before ECMO implantation

From: Liver function predicts survival in patients undergoing extracorporeal membrane oxygenation following cardiovascular surgery

   30-day mortality Long-term mortality
Baseline parameters SD HR (95 % CI) P value HR (95 % CI) P value
Alkaline phosphatase, U/L 68.9 1.23 (1.02–1.50) 0.035 1.14 (0.95–1.38) 0.16
Bilirubin total, mg/dl 2.0 1.16 (1.02–1.32) 0.028 1.15 (1.02–1.30) 0.028
Aspartate transaminase, U/L 303.5 1.08 (0.92–1.27) 0.36 1.06 (0.91–1.23) 0.45
Alanine transaminase, U/L 192.0 1.07 (0.90–1.27) 0.45 1.04 (0.90–1.21) 0.60
AST/ALT ratio, n 1.9 0.97 (0.78–1.21) 0.81 0.95 (0.80–1.12) 0.51
γ-Glutamyl transferase, U/L 133.3 1.07 (0.87–1.32) 0.54 1.10 (0.94–1.29) 0.22
Albumin, g/L 8.7 0.83 (0.68–1.01) 0.06 0.86 (0.74–1.00) 0.049
Normotest, % 30.0 1.02 (0.82–1.26) 0.87 1.06 (0.90–1.24) 0.50
  1. ALT alanine aminotransferase, AST aspartate aminotransferase, CI confidence interval, HR hazard ratio, SD, standard deviation
  2. Hazard ratios refer to a 1-SD increase and/or decrease in continuous variables