Added Value of QuantiFERON TB-Gold in-Tube for Detecting Latent Tuberculosis Infection among Persons Living with HIV/AIDS
Table 3
TST results according to characteristics of 300 patients with AIDS in Brasilia, Federal District, Brazil.
Characteristics
TST positive (%)
TST negative (%)
Nonadjusted OR (95% CI)
Adjusted OR (95% CI)
Sex
Male
9 (4.2)
206 (95.8)
3.67 (0.46–29.42)
4.27 (0.40–45.58)
Female
1 (1.2)
84 (98.8)
1.0 (reference)
1.0 (reference)
Schooling (years)
<9 years
2 (3.4)
56 (96.6)
1.04 (0.22–5.05)
1.26 (0.20–7.95)
≥9 years
8 (3.3)
234 (96.7)
1.0 (reference)
1.0 (reference)
Single
Yes
7 (4.2)
159 (95.8)
1.92 (0.49–7.58)
1.37 (0.30–6.33)
No
3 (2.2)
131 (97.8)
1.0 (reference)
1.0 (reference)
Monthly income*
None
2 (8.7)
21 (91.3)
2.06 (0.32–13.20)
2.37 (0.28–20.02)
<1 minimum wage
2 (4.0)
48 (96.0)
0.90 (0.14–5.61)
1.88 (0.21–16.83)
1–5 minimum wages
3 (1.9)
156 (98.1)
0.42 (0.08–2.12)
0.59 (0.11–3.29)
>5 minimum wages
3 (4.4)
65 (95.6)
1.0 (reference)
1.0 (reference)
Alcohol intake
Yes
8 (5.0)
151 (95.0)
3.68 (0.77–17.64)
2.52 (0.49–12.82)
No
2 (1.4)
139 (98.6)
1.0 (reference)
1.0 (reference)
Smoking habit
Yes (ever)
1 (2.9)
34 (97.1)
0.84 (0.10–6.67)
0.72 (0.08–6.25)
No
9 (3.4)
256 (96.6)
1.0 (reference)
1.0 (reference)
BCG vaccination
Yes
8 (3.5)
220 (96.5)
1.27 (0.26–6.13)
1.13 (0.20–6.35)
No
2 (2.8)
70 (97.2)
1.0 (reference)
1.0 (reference)
History of contact with index case
Yes
1 (2.9)
34 (97.1)
0.92 (0.11–7.61)
1.21 (0.13–11.16)
No
8 (3.1)
251 (96.9)
1.0 (reference)
1.0 (reference)
No information
1 (16.7)
5 (83.3)
—
—
CD4 count,
<200 cells/mm³
—
30 (100)
0.76 (0.10–6.25)
—
≥200 cells/mm³
10 (3.7)
260 (96.3)
1.0 (reference)
—
Doses of BCG,
One
8 (3.8)
202 (96.2)
0.00
—
Two
—
18 (100)
1.0 (reference)
—
Legend: LTBI: latent tuberculosis infection; BCG: Bacillus Calmette-Guérin; TST: tuberculin skin testing.
*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.
