Model for end-stage liver disease-Na score or Maddrey discrimination function index, which score is best?

Table 4 Clinical utility analysis at 30 and 90 d to predict mortality %

	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Accuracy
Maddrey DFI > 32
Mortality at day 30	96	21	53	86	57
Mortality at day 90	93	22.7	62.2	71.4	63.5
MELD-Na > 21
Mortality at day 30	85	31	53	69	57.1
Mortality at day 90	87	40	66	69	67.3

MELD: Model for end-stage liver disease; DFI: Discrimination function index.