| Age yrs | 47.2 (16.5–76.7) |
| Male | 203 (73.8) |
| Ethnicity | |
| Chinese | 186 (67.6) |
| Malay | 65 (23.6) |
| Indian | 14 (5.1) |
| Others | 10 (3.6) |
| Presence of diabetes mellitus | 99 (36.0) |
| Body mass index kg·m−2 | 20.1 (12.0–34.5) |
| Cigarette smoking | |
| Current | 115 (41.8) |
| Ex-smoker | 38 (13.8) |
| Nonsmoker | 122 (44.4) |
| Sputum smear | |
| Positive | 210 (76.4) |
| Negative | 63 (22.9) |
| Missing | 2 (0.7) |
| Sputum MTC drug susceptibility | |
| Pan-sensitive | 246 (89.5) |
| Mono-resistant to isoniazid | 6 (2.2) |
| Mono-resistant to streptomycin | 16 (5.8) |
| Mono-resistant to rifampicin | 1 (0.3) |
| Poly-resistance (excluding MDRTB) | 5 (1.8) |
| DST not done | 2 (0.7) |
| Presence of cavity on initial chest radiograph | 140 (50.9) |
Data are presented as mean (range) and n (%), unless otherwise indicated. MTC: Mycobacterium tuberculosis complex; MDRTB: multidrug-resistant tuberculosis; DST: drug susceptibility testing. n = 275.