Table 4.

Risk Factors for LTBI as Determined by Logistic Regression Using the Significant Variables in the Above Model

VariableParameter EstimateStandard ErrorRisk RatioP Value
Foreign birth2.2190.5159.201<.0001
Foreign travel2.0150.5407.504.0002
Contact with active TB4.1211.16761.616.0004
Previous negative TST−2.6570.6460.070<.0001
Relative with positive TST2.7570.62115.745<.0001