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Demographics of the study groups
| Study demographics | Pulmonary TB | LTBI | NTBI |
|---|---|---|---|
| Subjects recruited, n | 44 | 44 | 44 |
| Sex: male/female | 35/9 | 34/10 | 36/8 |
| Age, years, median (range) | 35 (18–64) | 39 (21–60) | 42 (19–60) |
| Smear grade (1+ /2+ /3+) | 13/11/18 | Not applicable | Not applicable |
| QuantiFERON® TB Gold In-Tube | Not done | Positive | Negative |
| Tuberculin skin test, mm | Not done | >12 mm | <12 mm |
TB = tuberculosis; LTBI = latent tuberculous infection; NTBI = no tuberculous infection.
