Skip to main content

Table 3 Multiple logistic regression analysis for positive TST and QFT-GIT results

From: In-hospital contact investigation among health care workers after exposure to smear-negative tuberculosis

 

QFT-GIT ≥ 0.35 IU/ml

TST > 5 mm

TST > 10 mm

Variables

Adjusted OR (95% CI)

Adjusted OR (95% CI)

Adjusted OR (95% CI)

Male sex

1.0 (0.27–3.51)

1.1 (0.48–2.61)

1.5 (0.56–3.89)

Age categorized*

2.7 (1.32–5.46) #

1.6 (1.00–2.69)#

1.6 (0.90–2.82)#

Foreign birth country

2.5 (0.67–9.42)

3.0 (1.03–8.99) #

4.4 (1.35–14.36) #

BCG vaccination

1.7 (0.44–6.36)

2.9 (1.19–6.86) #

4.2 (1.38–12.85) #

Unknown BCG status

2.4 (0.36–16.20)

1.4 (0.31–6.32)#

2.6 (0.51–13.33)#

Exposure per hour

1.0 (0.95–1.07)

1.0 (0.93–1.02)

1.0 (0.95–1.04)

Close contact

0.7 (0.22–2.41)

1.0 (0.45–2.26)

2.0 (0.74–5.29)

Nursing profession/Physician

1.4 (0.44–4.75)

0.7 (0.31–1.54)

0.7 (0.30–1.83)

Affiliation with Pulmonary Care

0.8 (0.09–6.76)

0.5 (0.14–2.04)

0.5 (0.09–2.50)

Family history of TB

2.9 (0.46–18.01)

3.8 (0.83–17.63)

2.0 (0.40–10.16)

  1. * Compare Table 1. # Variable included in final model building. OR and 95% CI with statistical significance are printed bold. BCG = Bacillus Calmette-Guérin; CI = confidence interval; OR = Odds ratio; QFT-GIT = QuantiFERON®-TB Gold in tube; TST = tuberculin skin test.