Table 1.
Baseline characteristics
| N = 928 | |
|---|---|
| Age, mean ± SD | 67.5 ± 8.6 |
| Male | 466 (50.2) |
| Self-reported race | |
| White | 850 (91.6) |
| Black | 78 (8.4) |
| Former Smoker | 688 (74.1) |
| Pack Years, mean ± SD | 44.5 ± 24.3 |
| Body Mass Index (kg/m2), mean ± SD | 29.0 ± 6.1 |
| Inhaled corticosteroid use | 49 (5.3) |
| Post Bronchodilator FEV1 (L), mean ± SD | 2.0 ± 0.9 |
| Post Bronchodilator FEV1 (percent predicted), mean ± SD | 77.8 ± 26.0 |
| Post Bronchodilator FVC (L), mean ± SD | 3.1 ± 1.0 |
| Post Bronchodilator FVC (percent predicted), mean ± SD | 86.6 ± 18.5 |
| GOLD class | |
| PRISm (reduced FEV1 and FVC, with a FEV1-to-FVC ratio of ≥ 0.7) | 82 (8.8) |
| GOLD 0 | 412 (44.4) |
| GOLD 1 | 97 (10.5) |
| GOLD 2 | 198 (21.4) |
| GOLD 3 | 109 (11.8) |
| GOLD 4 | 29 (3.1) |
| Percentage of Lung Occupied by QIA, mean ± SD | 5.0 ± 4.3 |
| ≥ 5% Percentage of Lung Occupied by QIA | 332 (35.8) |
| Percentage of Lung Occupied by Emphysema, mean ± SD | 8.1 ± 16.0 |
| ≥ 5% Percentage of Lung Occupied by Emphysema | 242 (26.1) |
N(%) unless otherwise specified
FEV1 forced expiratory volume in 1s, FVC forced vital capacity, GOLD Global Initiative for Chronic Obstructive Lung Disease, PRISm Preserved ratio impaired spirometry, QIA quantitative interstitial abnormalities