Research article
Diagnosis and follow-up of treatment of latent tuberculosis; the utility of the QuantiFERON-TB Gold In-tube assay in outpatients from a tuberculosis low-endemic country
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* Corresponding author: Anne M Dyrhol-Riise adri@helse-bergen.no
1 Department of Medicine, Section of Infectious diseases, Haukeland University Hospital, Bergen, N-5021, Norway
2 Department of Pulmonary Medicine, Haukeland University Hospital, N-5021 Bergen, Norway
3 Centre for Clinical Research, Haukeland University Hospital, N-5021 Bergen, Norway
4 Institute of Medicine, The Medical Faculty, University of Bergen, Bergen, N-5021 Norway
5 Centre for International Health, University of Bergen, Bergen, N-5021 Norway
BMC Infectious Diseases 2010, 10:57 doi:10.1186/1471-2334-10-57
Published: 8 March 2010Additional files
Additional file 1:
Predictors for positive QuantiFERON-TB Gold test (QFT-TB). Multivariate analysis performed by logistic regression. * P-value < 0.05, **P-value < 0.001. CI: confidence intervals, OR: odd ratios. Age was categorised as 9-19 years, 20-29 years, 30-39 years, 40-49 years, 50-59 years and ≥ 60 years. Recent stay in a TB endemic country, recent exposure of TB and recent vaccination were all categorised as time since last event (<1 year, 1 to <2 years, 2 to <3 years, 3 to <5 years, 5 to <10 years, 10 to <20 years and then in 10 year intervals). Duration of exposure was categorised as <1 day, 1 to 6 days, 1 to <4 weeks, 1 to <2 months, 2 to <3 months, ≥ 3 months. Some numbers do not add up to 481 for all characteristics due to unknown parameters for some participants. The number of observations available for each variable and the total number of observations (no = 389) included in the final logistic regression model are as given in brackets.
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