Figure 2.

Receiver operating characteristic curve analysis of models that predicted 72-h mortality among patients with extremely high values of serum aspartate aminotransferase. Gray line indicates reference values, comprising age and aspartate aminotransferase (AST); black line indicates prediction mode, comprising alkaline phosphatase (ALP), creatine kinase (CK), sodium, pottasium, and phosphorus values. The predicted probability (p) for the 72-h mortality of the prediction model was calculated using the following formula: p = 1/ [1 + exp (-19.98 + 0.290(ALP^0.2) + 0.348log (CK) + 1.766(Na^0.2) + 1.568(K^0.2) + 0.474(P^0.8))].