Table 2.
Characteristics of patients
| Sex (M/F) | 21/0 |
| Age (years) | 70.7±7.7 |
| BMI (kg/m2) | 21.3±3.3 |
| Smoking | |
| Cur/Ex/Non | 6/15/0 |
| Pack-year | 63.7±31.1 |
| MMRC scale (0/1/2/3/4) | 7/7/5/2/0 |
| Staging (I/II/III/IV) | 4/10/4/3 |
| Pulmonary function | |
| FVC (L) | 3.50±0.65 |
| FEV1 (L) | 1.72±0.63 |
| FEV1 % (%) | 48.2±13.3 |
| FEV1 % predicted (%) | 59.8±21.7 |
| IC (L) | 2.13±0.37 |
| IC/TLC (%) | 33.3±6.4 |
| FRC (L) | 4.32±0.81 |
| RV (L) | 2.84±0.62 |
| TLC (L) | 6.47±0.85 |
| DLCO (mL/min/mmHg) | 14.87±5.16 |
| DLCO/VA (mL/min/mmHg/L) | 3.24±1.15 |
Abbreviations: BMI, body mass index; Cur, current smoker; Ex, ex smoker; Non, nonsmoker; MMRC, Modified Medical Research Council; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; FEVl%, 100 × FEVl/FVC; FEVl% predicted, 100 × FEVl/predicted FEVl; IC, inspiratory capacity; TLC, total lung capacity; FRC, functional residual capacity; RV, residual volume; DLCO, pulmonary carbon monoxide diffusing capacity; min, minute; VA, alveolar volume.