Added Value of QuantiFERON TB-Gold in-Tube for Detecting Latent Tuberculosis Infection among Persons Living with HIV/AIDS
Table 5
Discordant and concordant results of QTF-GIT and TST according to characteristics of 300 patients with AIDS in Brasilia, Federal District, Brazil.
Characteristics
Discordant result (%)
Concordant result (%)
Nonadjusted OR (95% CI)
Adjusted OR (95% CI)
Sex
Male
9 (4.2)
206 (95.8)
0.83 (0.22–3.16)
0.59 (0.12–2.86)
Female
3 (3.5)
82 (96.5)
1.0 (reference)
1.0 (reference)
Schooling (years)
<9 years
5 (8.6)
53 (91.4)
1.0 (reference)
1.0 (reference)
≥9 years
7 (2.9)
234 (97.1)
3.15 (0.96–10.32)
6.31 (1.28–31.22)
Single
Yes
8 (4.8)
157 (95.2)
1.0 (reference)
1.0 (reference)
No
4 (3.0)
130 (97.0)
1.66 (0.49–5.62)
1.57 (0.41–5.98)
Monthly income
None
—
23 (100)
—
—
<1 minimum wage
4 (8.0)
46 (92.0)
0.72 (0.17–3.02)
1.73 (0.25–12.22)
1–5 minimum wages
4 (2.5)
155 (97.5)
2.41 (0.58–9.92)
3.85 (0.78–18.96)
>5 minimum wages
4 (5.9)
64 (94.1)
1.0 (reference)
1.0 (reference)
Alcohol intake
Yes
6 (3.8)
152 (96.2)
1.13 (0.35–3.57)
1.15 (0.34–3.92)
No
6 (4.3)
135 (95.7)
1.0 (reference)
1.0 (reference)
BCG vaccination
Yes
10 (4.4)
218 (95.6)
1.0 (reference)
1.0 (reference)
No
2 (2.8)
70 (97.2)
1.61 (0.34–7.54)
5.47 (0.35–84.32)
Doses of BCG†
Two
1 (5.6)
17 (94.4)
1.31 (0.16–10.94)
2.48 (0.24–25.64)
One
9 (4.3)
201 (95.7)
1.0 (reference)
1.0 (reference)
CD4 count
<200 cells/mm³
1 (3.3)
29 (96.7)
1.24 (0.15–9.92)
1.27 (0.13–12.22)
≥200 cells/mm³
11 (4.1)
258 (95.9)
1.0 (reference)
1.0 (reference)
Smoking habit
Yes (ever)
—
35 (100)
1.85 (0.23–14.57)
—
No
12 (4.5)
253 (95.5)
1.0 (reference)
—
History of contact with index case
Yes
1 (2.9)
34 (97.1)
0.00
—
No
11 (4.3)
248 (95.7)
1.0 (reference)
—
No information
—
6 (100)
—
—
Legend: LTBI: latent tuberculosis infection; BCG: Bacillus Calmette-Guérin; TST: tuberculin skin testing; QTF-GIT: QuantiFERON TB-Gold in-Tube.
*Minimum wage = 615.00 Brazilian reais, equivalent to 349.40 American dollars at the time of data collection. †Percentage calculated over those vaccinated with BCG. One unit added to all cells to allow OR calculation.
