Table 1. Demographic data of enrolled participants at time of simultaneous T-SPOT.TB and TST.
| All patients (n = 909) | TST positive (n = 227, 25.0%) | T-SPOT.TB positive (n = 134, 14.7%) | Dual positive (TST and T-SPOT.TB) (n = 81, 8.9%) | |
| Age, median(yrs) | 34.8(20–82) | 34.8(21–82) | 37.4(21–82) | 36.7(21–82) |
| Men | 796(87.6%) | 198(87.2%) | 122(91.0%) | 75(92.6%) |
| HIV transmission risk category | ||||
| MSM | 450(49.5%) | 84(37.0%) | 49(36.6%) | 29(35.8%) |
| Heterosexual | 97(10.7%) | 28(12.3%) | 17(12.7%) | 10(12.3%) |
| IDU | 362(39.8%) | 115(50.7%) | 68(50.7%) | 42(51.9%) |
| HIV-related factors | ||||
| AIDS status | 196(21.6%) | 34(15.0%) | 25(18.7%) | 17(21.0%) |
| CD4 cells, median | 447(7–1644) | 547(91–1460) | 491(124–1644) | 524(124–1460) |
| CD4<200/ml | 56(6.2%) | 5(2.2%) | 6(4.5%) | 4(4.9%) |
| HIV RNA, median(log10) | 3.25(1.4–6.5) | 2.85(1.4–5.4) | 3.08(1.4–5.4) | 3.38(1.4–5.4) |
| HIV RNA<50 copies/mL | 304(33.4%) | 87(38.3%) | 48(35.8%) | 27(33.3%) |
| On ART at enrollment | 369(40.6%) | 90(39.6%) | 53(39.6%) | 32(39.5%) |
| No BCG scar # | 51(5.8%) | 11(4.9%) | 15(11.2%) | 8(9.9%) |
| Self-reported contact with active TB case # | 52(6.3%) | 19(9.4%) | 15(11.8%) | 13(17.3%) |
| Prison stay | 362(37.9%) | 121(53.3%) | 66(49.3%) | 42(51.9%) |
Definition of abbreviations: MSM = man who had sex with man; IDU = injecting drug use; ART = highly active antiretroviral therapy; BCG = Bacille Calmette-Guérin; TST = tuberculin skin test.
#
83 cases missed data of BCG scars; 133 cases missed TB contact history.