Multivariable logistic regression analysis for predictive variables of LTBI (n=109).
| aOR | 95% CI | P values | |
| >1.5 persons per household room | 4.87 | 1.44 to 16.45 | 0.011 |
| Index case <50 years old | |||
| <30 years | 0.17 | 0.03 to 0.83 | 0.029 |
| 30–50 years | Ref | ||
| >50 years | 0.17 | 0.05 to 0.61 | 0.006 |
| Presence of cavities | 40.85 | 2.02 to 825.02 | 0.016 |
| Index case smear result | |||
| Negative | Ref | ||
| <++ | 2.49 | 0.49 to 12.74 | 0.273 |
| ++/+++ | 4.85 | 1.35 to 17.45 | 0.015 |
| Child sleeps in the same house as index case | 5.50 | 1.28 to 23.67 | 0.022 |
| TST done previously | 3.64 | 1.08 to 12.28 | 0.037 |
| Interaction contact age × cavities | 0.03 | 0.00 to 1.19 | 0.062 |
| Absence of cavities | |||
| Contact age <5 | Ref | ||
| Contact age >5 | 60.39 | 1.80 to 2023.06 | 0.022 |
| Presence of cavities | |||
| Contact age <5 | Ref | ||
| Contact age >5 | 1.86 | 0.45 to 7.68 | 0.390 |
aOR, adjusted OR; LTBI, latent tuberculosis infection; ref, reference; TST, tuberculin skin test.
p-values <0.005 in bold.