Table 3.
Variables associated with latent TB infection (LTBI) in both periods
|
2001-2004 |
2005-2008 |
||||||
|---|---|---|---|---|---|---|---|
| Variables (n) |
Contacts with LTBI (n = 496) |
p value | OR (CI 95%) | Variables (n) |
Contacts with LTBI (n = 877) |
p value | OR (CI 95%) |
| Index case AFB positive (n = 193) |
356 (71.8%) |
0.001 |
0.5 (0.3-0.7) |
Index case AFB positive (n = 287) |
665 (75.8%) |
<0.001 |
1.7 (1.3–2.3) |
| Index case HIV positive (n = 4) |
12 (2.4%) |
0.2 |
0.4 (0.1-1.3) |
Index case HIV positive (n = 5) |
16 (1.8%) |
0.1 |
0.4 (0.1–1.1) |
| Household contact (n = 620) |
387 (78%) |
0.7 |
0.9 (0.6-1.3) |
Household contact (n = 761) |
547 (62.4%) |
0.07 |
1.2 (0.9-1.6) |
| Smoking contact (n = 81) |
54 (10.9%) |
0.8 |
1.0 (0.6-1.8) |
Smoking contact (n = 88) |
82 (9.4%) |
<0.001 |
9.5 (2.9 – 30.5) |
| Contacts living in poor areas (slum) (n = 111) |
71 (15.5%) |
0.6 |
1.1 (0.7-1.8) |
Contacts living in poor areas (slum) (n = 205) |
141 (17.7%) |
0.9 |
0.9 (0.6-1.3) |
| Contacts prisoners/previous hospitalization (n = 26) |
22 (4.5%) |
0.1 |
2.6 (0.8-7.6) |
Contacts prisoners/previous hospitalization (n =35) |
20 (2.3%) |
0.3 |
0.6 (0.2-1.3) |
| Contacts with alcohol abuse (n = 18) | 13 (2.6%) | 0.9 | 1.2 (0.4-3.4) | Contacts with alcohol abuse (n = 45) | 44 (5%) | <0.001 | 14.9 (2.0-109) |
Excluded from the table are injecting drug use, use of non-injectable drugs, diabetes “mellitus” and use of immunosuppressive drugs because no contact was diagnosed with LTBI. Statistical test used was Chi-square.