Table 2.

Comparison of nonparametric approach to gold-standard Bayesian approach

		Nonparametric threshold classification
		Method A		Method B
		Reinfection	Recrudescence	Reinfection	Recrudescence
Gold-standard Bayesian classification	Reinfection	119	14	112	21
	Recrudescence	1	41	1	41
		Sensitivity	98%	Sensitivity	98%
		Specificity	89%	Specificity	84%
		PVP	75%	PVP	66%
		PVN	99%	PVN	99%
		Accuracy	91%	Accuracy	87%

PVN = predictive value negative; PVP = predictive value positive;