Table 2.
Lung function stratified according to HRCT findings.
| Normal HRCT | Residual Ground Glass (GG) | Air trapping (AT) | GG + AT | P values | |
|---|---|---|---|---|---|
| Numbers | 22 | 5 | 8 | 3 | |
| % predicted FVC | 93.5 (88–101) | 82 (73.3–92.3) | 96 (78–108.5) | 93 (73–108) | NS |
| % predicted FEV1 | 89.5 (81–94) | 82 (72.5–87.5) | 90.5(74.3–102.8) | 97 (79–103) | NS |
| FEV1/FVC | 89 (80–96) | 90 (86.3–94.8) | 85.5 (80–93) | 97 (88–99) | NS |
| % predicted FEF25–75 | 88 (64–111) | 81 (65–94.5) | 83 (57.8–107) | 105 (102–126) | NS |
| % predicted TLC | 101 (92.8–108.3) | 93 (88.5–102.8) | 96.5 (90.5–114.3) | 96 (91–102) | NS |
| % predicted DLco | 119 (91.5–141.5) | 106 (103.8–119.8) | 106 (91–125) | 98 (91–102) | NS |
Result: median (IR); HRCT: high resolution computed tomography of the thorax; FVC: forced vital capacity; FEV1: forced expiratory volume in one second; FEF 25–75: forced expiratory flow rate over the middle 50% of FVC; TLC: total lung capacity; DLco: carbon monoxide diffusion capacity corrected; NS: not statistically significant.