Table 3.

Contingency table for billing / condition pairs.

Billed for	Condition Present	Condition Absent	Total
Yes	TP	FP	TP+FP
No	FN	TN	FN+TN
Total	TP+FN	FP+TN

TP = True Positive, FP = False Positive, TN = True Negative, FN = False Negative