Evaluation of the Diagnostic Efficacy of Xpert CT/NG for Chlamydia trachomatis and Neisseria gonorrhoeae

Table 4

Subgroup analyses of Xpert CT/NG for the diagnosis of CT and NG infections in anorectal, urine, and vaginal specimens.

Bacterial species	Type of specimens	Parameter	Estimates	95% CI	value
CT	Anorectal	Sensitivity	0.94	0.91-0.96	0.0664	47.1%
		Specificity	0.99	0.98-0.99	0.0000	78.6%
	Urine	Sensitivity	0.90	0.87-0.93	0.0000	82.2%
		Specificity	1.00	0.99-1.00	0.0166	63.9%
	Vaginal	Sensitivity	0.91	0.84-0.96	0.0000	90.9%
		Specificity	0.99	0.98-1.00	0.0075	79.6%
NG	Anorectal	Sensitivity	0.93	0.90-0.96	0.1680	32.6%
		Specificity	1.00	1.00-1.00	0.2970	16.9%
	Urine	Sensitivity	0.94	0.88-0.97	0.0934	46.9%
		Specificity	1.00	1.00-1.00	0.1647	35.9%
	Vaginal	Sensitivity	0.96	0.79-1.00	0.1911	39.6%
		Specificity	1.00	1.00-1.00	1.0000	0.0%