TABLE 2.

T-SPOT.TB, QFN-G-IT, and TST results for different groups in adult and child populations

Test and resultNo. (%) of adults in groupNo. (%) of children in group
Overall (n = 492)Patients with active TB (n = 33)Contact tracing study (n = 206)Screening for LTBI (n = 253)Overall (n = 134)Patients with active TB (n = 9)Contact tracing study (n = 64)Screening for LTBI (n = 61)
T-SPOT.TB
    Positive229 (46.6)30 (90.1)90 (43.7)109 (43.1)51 (38.1)6 (66.7)32 (62.7)13 (21.3)
    Negative259 (52.6)2 (6.1)114 (55.3)143 (56.5)80 (59.7)1 (11.1)31 (48.4)48 (78.7)
    Indeterminate4 (0.8)1 (3)2 (1)1 (0.4)3 (2.2)2 (22.2)1 (0.7)0 (0)
QFN-G-IT
    Positive192 (39)27 (81.8)70 (33.9)95 (37.5)50 (37.3)6 (66.7)28 (43.8)16 (26.2)
    Negative299 (60.8)6 (18.2)135 (65.6)158 (62.5)84 (62.7)3 (33.3)36 (56.3)45 (73.8)
    Indeterminate1 (0.2)0 (0)1 (0.5)0 (0)0 (0)0 (0)0 (0)0 (0)
TST
    Positive366 (74.4)31 (93.9)150 (72.8)185 (73.1)115 (85.8)9 (100)53 (82.8)53 (86.9)
    Negative126 (25.6)2 (6.1)56 (27.2)68 (26.9)19 (14.2)0 (0)11 (17.2)8 (13.1)
    Indeterminate0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)