Table 2.

Performance of NASHmap in classifying patients in a cohort with known status from NIDDK.

		Predicted class (NASHmap)		Metrics
		Positive	Negative
True class (biopsy confirmed NASH)	Positive	TP = 147	FN = 34	Sensitivity/TPR = 81%
	Negative	FP = 37	TN = 63	Specificity/TNR = 63%
Metrics		Precision/PPV = 80%	NPV = 65%	Accuracy = 75%

Accuracy: TP + TN/(TP + FP + FN + TN); FN: false negative; FP: false positive; NIDDK: National Institute of Diabetes and Digestive Kidney Diseases; NASH: nonalcoholic steatohepatitis; NPV: negative predictive value (TN/[FN + TN]); PPV: positive predictive value (TP/[TP + FP]); TN: true negative; TNR: true negative rate (TN/[FP + TN]); TP: true positive; TPR: true positive rate (TP/[TP + FN]).