Table 1

Demographic characteristics of TB patients and healthy controls
Patients group Healthy controls group
Low-Density Array study Validation study Low-Density Array study Validation study
Number of participants 20 30 20 65
Gender (male/female) 10/10 18/12 10/10 35/30
Age (years, mean) 39.2 ± 16.8 44.0 ± 14.2 39.5 ± 16.6 45.3 ± 20.9
Smoking (Yes/no) 4/20 5/30 4/20 10/65
Primary pulmonary lesion by radiography 10 28 0 0
Sputum smear (positive) 20 30 0 0
Culture-positive TB 20 30 NA NA
BCG vaccination (yes/no) 11/5 18/6 20/0 65/0
IGRA-positive TB 20 30 0/20 0/65
HIV - - - -

TB, tuberculosis; BCG, Bacillus Calmette-Guérin vaccine; IGRA, IFN-γ release assay. NA, not applicable; HIV, Human immunodeficiency virus.

Qi et al.

Qi et al. BMC Infectious Diseases 2012 12:384   doi:10.1186/1471-2334-12-384

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