Table 1.
Baseline patient characteristics.
| ILD | Non-ILD | p | |
|---|---|---|---|
| Patients (N) | 29 | 363 | - |
| Age (mean ± SD) | 73 ± 8 | 65 ± 11 | <0.01 |
| Sex (male, %) | 72 | 63 | 0.44 |
| Smoking history (median [IQR], PY) | 40 (30–50) | 40 (25–50) | 0.64 |
| Active smoking (%) | 21 | 47 | 0.01 |
| Lung function tests | |||
| FEV1 (median [IQR]) | 85 (64–103) | 78 (60–91) | 0.10 |
| FVC (median [IQR]) | 87 (76–106) | 95 (80–106) | 0.44 |
| DLCO (median [IQR]) | 59 (45–67) | 74 (59–88) | <0.01 |
Abbreviations: DLCO: diffusion lung capacity of carbon monoxide; FEV1: forced expired volume in one second; FVC: forced vital capacity; ILD: interstitial lung disease; IQR: interquartile range; p: p value; PY: pack years; SD: standard deviation.