TABLE 3.

Sensitivity and specificity of the AGC assay performed on USs and FCU according to presence (+) or absence (−) of symptoms

Specimen	Presence of symptoms	Sensitivity			Specificity
		%	No. identified/no. total	95% CIa	%	No. identified/no. total	95% CIa
US	+	99.4	171/172	96.8-100	97.5	393/403	95.5-98.8
	−	100	110/110	71.5-100	97.1	710/731	95.6-98.2
	Both	99.5	182/183	97.0-100	97.3	1,103/1,134	96.1-98.1
FCU	+	99.4	171/172	96.8-100	99	400/404	97.5-99.7
	−	90.9	100/110	58.7-99.8	99.5	730/734	98.6-99.9
	Both	98.9	181/183	96.1-99.9	99.3	1,130/1,138	98.6-99.7

^aCI, confidence interval.