Table 3.

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

	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)

* 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.