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) |