Table 5.

Comparison among discretization algorithms' performance.

Algorithmf	Accuracya	Recallb	Precisionc	Specificityd	NPVe
ADID	80%	90%	82%	57%	72%
EntMDL	68%	60%	91%	87%	50%
Modified Chi2	71%	64%	91%	87%	53%
ROC-based	77%	84%	82%	61%	64%
Equal Frequency	68%	60%	91%	87%	50%

^a Accuracy is the fraction of correctly classified patients and overall classified patients.

^b Recall is the fraction of correctly classified good outcome patients and the overall predicted good outcome patients.

^c Precision is the fraction of correctly classified good outcome patients and the predicted good outcome patients.

^d Specificity is the fraction of correctly classified poor outcome patients and the overall poor outcome patients.

^e NPV(negative predictive value) is the fraction of correctly classified poor outcome patients and the overall predicted poor outcome patients.

^f Discretization algorithms utilized for comparison/