Table 2 Univariable and multivariable analysis of the factors associated with active tuberculosis among students#
CharacteristicMedian or n/NUnivariableMultivariable
OR (95% CI)OR (95% CI)p-value
Age yrs17.20.27 (0.11–0.67)0.23 (0.07–0.75)0.011
Sex
 Female7/19110.488
 Male12/190.89 (0.73–4.90)1.50 (0.40–5.55)
UK-born+
 No2/1911
 Yes17/190.65 (0.15–2.87)
Travel to high-burden country
 No14/19110.200
 Yes5/191.81 (0.63–5.17)2.20 (0.55–8.84)
White ethnicity
 No7/19110.055
 Yes12/190.20 (0.07–0.53)0.26 (0.05–1.43)
Group
 1110.371
 20.72 (0.19–2.72)2.14 (0.23–20.04)
 30.18 (0.06–0.59)0.60 (0.07–4.96)
BCG
 No15/19110.780
 Yes4/190.38 (0.12–1.25)1.06 (0.22–5.23)
  • BCG: bacille Calmette–Guérin. #: n=2,284; : likelihood ratio test; +: perfectly predicts outcome in the multivariable model.