Is an estimated glomerular filtration rate better than creatinine to be incorporated into the end-stage liver disease score?

Figure 1 Receiver-operating characteristic curve of the original model for end-stage liver disease and the model for end-stage liver disease-6-variable model for end-stage liver disease score for the prediction of in-hospital mortality. MELD: Model for end-stage liver disease; MDRD: Modification of diet in renal disease; MDRD-6: 6-variable MDRD; AUC: Area under curve; Sen: Sensitivity; Spe: Specificity.