Combined Age with Mean Decrease Rates of Total Bilirubin and MELD Score as a Novel and Simple Clinical Predictor on 90-Day Transplant-Free Mortality in Adult Patients with Acute Liver Failure Undergoing Plasma Exchange: A Single-Center Retrospective Study

Table 4

Area under the ROC curve.

Variable	Area	SE	Asymptotic sig.	Asymptotic 95% CI
				Lower bound	Upper bound
Age	0.689	0.070	0.010	0.552	0.826
Mean decrease rate of total bilirubin	0.225	0.062	0.000	0.104	0.346
Mean decrease rate of MELD score	0.123	0.045	0.000	0.035	0.211
The three combined	0.912	0.037	0.000	0.839	0.985

ROC, receiver operating characteristic; SE, standard error; CI, confidence interval; MELD score, model for end-stage liver disease.