Table 1. Baseline characteristics of the 40 patients.

Variables	No. (%) or median (IQR)
Sex (males)	26 (65.0)
Age (years)	63.0 (55.3–70.8)
Smoking
Never	23 (57.5)
Former	14 (35.0)
Current	3 (7.5)
Symptom
Cough	12 (30.0)
Dyspnoea	6 (15.0)
Sputum	5 (12.5)
Haemoptysis	4 (10.0)
No symptoms	21 (52.5)
Associated lung disease
Lung cancer	15 (37.5)
Previous history of pulmonary tuberculosis	7 (17.5)
Reason for bronchoscopy
Suspicious for lung nodules or mass	23 (57.5)
Chest CT abnormality
Calcified nodules	8 (20.0)
Endobronchial lesions	6 (15.0)
Empyema	1 (2.5)
Chronic cough	2 (5.0)

IQR, interquartile range; CT, computed tomography.