Table 4. Diagnostic values of QFT-GIT in active pulmonary TB patients stratified by HIV status calculated over the total of patients tested (indeterminate results included as negative results) and only over the interpretable results (indeterminate results excluded).

HIV status	Indeterminate results included as negative results				Indeterminate results excluded
	Sensitivity	Specificity	LR+	LR−	Sensitivity	Specificity		LR+	LR−
	Percentage (95% CI)				Percentage (95% CI)
HIV-infected	68.4 (51.4–82.5)	64.8 (50.6–77.3)	1.95	2.05	89.7 (72.7–97.8)		60.4 (45.3–74.2)	2.26	5.86
HIV-uninfected	91.4 (81.0–97.1)	58.2 (44.1–71.4)	2.19	6.77	94.6 (85.1–98.9)		58.2 (44.1–71.4)	2.26	10.78
Total	82.3(73.2–89.3)	61.5 (51.7–70.6)	2.13	3.48	92.9 (85.3–97.4)		59.2 (49.1–68.8)	2.27	8.34

Footnotes: QFT-GIT: QuantiFERON® Gold in Tube; HIV: human immunodeficiency virus; TB: tuberculosis; PPV: positive predictive value; NPV: negative predictive value; LR+: positive likelihood ratio; LR.-: negative likelihood ratio.