Table 5

Multivariable logistic regression analysis for predictive variables of LTBI (n=109).

aOR95% CIP values
>1.5 persons per household room4.871.44 to 16.45 0.011
Index case <50 years old
 <30 years0.170.03 to 0.83 0.029
 30–50 yearsRef
 >50 years0.170.05 to 0.61 0.006
Presence of cavities40.852.02 to 825.02 0.016
Index case smear result
 NegativeRef
 <++2.490.49 to 12.740.273
 ++/+++4.851.35 to 17.45 0.015
Child sleeps in the same house as index case5.501.28 to 23.67 0.022
TST done previously3.641.08 to 12.28 0.037
Interaction contact age × cavities0.030.00 to 1.190.062
Absence of cavities
 Contact age <5Ref
 Contact age >560.391.80 to 2023.06 0.022
Presence of cavities
 Contact age <5Ref
 Contact age >51.860.45 to 7.680.390
  • aOR, adjusted OR; LTBI, latent tuberculosis infection; ref, reference; TST, tuberculin skin test.

  • p-values <0.005 in bold.