Table 3.

Sensitivity, specificity, and predictive values (using expanded gold standard).

Test	Sensitivity [95% C.I.]	Specificity [95% C.I.]	Predictive Value of Positive Test (in this population) [95% C.I.]	Predictive Value of Negative Test (in this population) [95% C.I.]
Cell Culture	56.1%	100%*	100%	95.0%
	[47.7 – 64.1]	[99.6 – 100]	[94.5 – 100]	[93.6 – 96.1]
OIA	64.2%	99.1%	89.6%	95.9%
	[55.9 – 71.8]	[98.4 – 99.5]	[81.8 – 94.5]	[94.6 – 96.8]
DFA	73.6%	99.9%	99.1%	96.9%
	[65.7 – 80.4]	[99.5 – 100]	[94.3 – 100]	[95.8 – 97.8]
PCR	95.3%	99.8%	98.6%	99.4%
	[90.1 – 97.9]	[99.3 – 100]	[94.5 – 99.8]	[98.8 – 99.8]

*Cell-culture positivity was one defining criterion for true positive.