| Before bronchodilation | After bronchodilation | |
| Best sRaw reversibility# in the past % baseline | -52±8 | |
| Best FEV1 reversibility# in the past % baseline | 23±11 | |
| FeNO ppb | 27 (15–43) (259) | |
| Spirometry | ||
| FVC % pred | 106±12 (445) | 107±12 (410) |
| FEV1 % pred | 96±12 (445) | 104±11 (410) |
| FEV1/FVC % | 79±7 (445) | 84±6 (410) |
| FEV1/FVC % pred | 90±8 (445) | 96±7 (410) |
| FEF25–75% % pred | 76±20 (445) | 94±20 (410) |
| Plethysmography | ||
| sRaw kPa·s−1 | 1.03±0.26 (491) | 0.70±0.16 (450) |
| TLC % pred | 102±11 (445) | 100±10 (410) |
| FRC % pred | 103±18 (491) | 98±10 (450) |
| RV % pred | 93±24 (445) | 83±21 (410) |
| FRC/TLC | 0.49±0.06 (445) | 0.48±0.06 (410) |
| RV/TLC | 0.22±0.05 (445) | 0.20±0.04 (410) |
Data are presented as median (interquartile range) (n available) or mean±sd (n available). sRaw: specific airway resistance; FEV1: forced expiratory volume in 1 s; FeNO: exhaled nitic oxide fraction; FVC: forced vital capacity; % pred: % predicted; FEF25–75%: forced expiratory flow at 25–75% of FVC; TLC: total lung capacity; FRC: functional residual capacity; RV: residual volume. #: expressed as 100×(value after bronchodilation minus before (baseline))/before bronchodilation (baseline).