Table 1. Baseline characteristics of TB patients and controls.
| Cases (TB Patients) | Controls | |
| Number | 663 | 566 |
| Mean age, years (SD) | 44.6 (17.3) | 30.4 (10.6) |
| Males (%) | 485 (73.2%) | 214 (37.8%) |
| Vietnamese born (%) | 100% | 100% |
| HIV negative (%) | 618/638 (97%)1 | |
| Pulmonary TB | 530 | |
| Extrapulmonary TB | ||
| All forms | 133 | - |
| Lymph node | 9 | - |
| Meningeal | 7 | - |
| Pleural | 105 | - |
| Abdominal | 10 | - |
| Other | 2 | - |
1
HIV serology results were not available for 25 TB patients included in the study. 19 of these stated they had no past history of HIV and had no features of HIV, and data was missing for one subject. SD: standard deviation.