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. 2018 Sep 24;13(9):e0204554. doi: 10.1371/journal.pone.0204554

Table 3. Test positive results of C-Tb versus TST (top) and QFT (bottom) in non-TB participants.

All HIV-uninfected HIV-
infected
C-Tb versus TST
N 920 658 262
C-Tb pos. (%) 41.0
(37.8–44.2)
43.6
(39.9–47.4)
34.4
(28.9–40.3)
TST pos. (%) 42.5
(39.3–45.7)
43.5
(39.7–47.3)
40.1
(34.3–46.1)
p-value* 0.2980 1.0000 0.0180
C-Tb versus QFT
N 741 496 245§
C-Tb pos. 46.6
(43.0–50.2)
53.2
(48.8–57.6)
33.1
(27.5–39.2)
QFT pos. 43.7
(40.2–47.3)
52.2
(47.8–56.6)
26.5
(21.4–32.4)
p-value* 0.1105 0.6935 0.0412

Data are presented as % (95% CI). Cut-point for TST was 5 mm in HIV-infected individuals and 15 mm in HIV-uninfected.

*McNemar’s test. In an intention to diagnose principle, QFT indeterminate results were included as negative.

Including 97 participants (≤5 years of age) with unknown HIV status.

Excluding 162 with missing QFT. 15/43 QFT indeterminate results were C-Tb positives.

§17 with missing QFT. 15/68 QFT indeterminate results were C-Tb positives.