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The area under ROC curve (95% CI) of the new PI, CTP, MELD and MELD-Na scoring systems were 0.86 (0.75–0.93), 0.63 (0.50–0.74), 0.79 (0.67–0.87) and 0.74 (0.63–0.84), respectively. MELD: The model for end-stage liver disease. MELD-Na: MELD with incorporation of sodium. CTP: Child-Turcotte-Pugh. PI: prognostic index
