Table 1. Baseline characteristics of the patient cohort (n=315).
| Characteristics | Value |
|---|---|
| Age, median [range] | 70 [35–88] |
| Gender | |
| Male | 192 |
| Female | 123 |
| Smoking history | |
| Never-smoker | 114 |
| Ex or current smoker | 201 |
| Body mass index (kg/m2), median (range) | 22.5 (14.9–33.3) |
| FVC (L), median (range) | 3.04 (1.44–5.99) |
| %FVC (%), median (range) | 109.2 (53.1–174.7) |
| FEV1 (L), median (range) | 2.19 (1.14–4.76) |
| FEV1/FVC (%), median (range) | 74.1 (35.7–98.9) |
| Comorbidities | |
| Hypertension | 100 |
| Chronic obstructive pulmonary disease | 55 |
| Diabetes mellitus | 47 |
| Interstitial lung disease | 12 |
| Infectious lung disease | 8 |
| Tuberculosis | 6 |
| Acute coronary disease | 8 |
| Chronic kidney disease | 3 |
| Histology | |
| Adenocarcinoma | 229 |
| Squamous cell carcinoma | 73 |
| Adenosquamous carcinoma | 5 |
| Large cell carcinoma | 8 |
FVC, forced vital capacity, FEV1, forced expiratory volume in 1 second.