These variables are used to calculate the score 2: MELD = (0.957 x ln ) + (0.378 x ln ) + (1.120 x ln ) + 0.643 if dialysis twice in last week, then creatinine is given a value of 4 mg/dl.The score has prognostic value in terms of three month mortality and certain complications. The MELD score ( Model for End-stage Liver Disease) is a classification used to grade liver dysfunction in preparation for liver transplantation.