Baseline characteristics of the study subjects
| Total patients n | 45 |
| Male:female n | 32:13 |
| Age yrs | 53 (27–71) |
| Past TB history | 7 (15.6) |
| Presence of diabetes mellitus | 13 (28.9) |
| Smoking | |
| Nonsmoker | 20 (44.4) |
| Ex-smoker | 4 (8.9) |
| Current smoker | 21 (46.7) |
| Cumulative amount# | 25 (2–60) |
| Pulmonary function test n | 36 |
| Normal | 29 |
| Obstructive pattern | 5 |
| Restrictive pattern | 2 |
| Symptomatic patients at the time of admission | 21 (46.7) |
| Sputum | 11 (24.4) |
| Cough | 9 (20.0) |
| General weakness/easy fatigability | 10 (22.2) |
| Weight loss | 7 (15.6) |
| Chest pain | 5 (11.1) |
| Dyspnoea on exertion | 4 (8.9) |
| Dizziness | 3 (6.7) |
| Sweating | 2 (4.4) |
| Headache | 2 (4.4) |
| Fever | 1 (2.2) |
| Haemoptysis | 1 (2.2) |
| Arthralgia | 1 (2.2) |
Data are presented as n (%) or median (range) unless otherwise stated
#: cumulative amount of smoking of ex-smokers and current smokers