Table 3 Spirometry results
|  | N = 22 | ||
|---|---|---|---|
Mean ± SD | Range | Median | |
Forced vital capacity | Â | Â | Â |
 Pre-bronchodilator FVC | 3.11 ± 0.88 | 1.4–4.6 | 3.3 |
 % of the predicted value | 74.24 ± 31.00 | 1.0–110.0 | 85.0 |
 Post-bronchodilator FVC | 3.39 ± 0.78 | 1.6–4.6 | 3.6 |
 % of the predicted value | 75.13 ± 33.00 | 1.0–107.0 | 87.0 |
Forced expiratory volume in 1Â s | Â | Â | Â |
 Pre-bronchodilator FEV1 | 2.41 ± 0.78 | 0.9–3.6 | 2.5 |
 % of the predicted value | 80.88 ± 20.07 | 49.0–127.0 | 81.0 |
 Post-bronchodilator FEV1 | 2.66 ± 0.69 | 1.1–3.5 | 2.9 |
 % of the predicted value | 85.67 ± 18.51 | 56.0–122.0 | 89.0 |
Ratio of FEV1/FVC | Â | Â | Â |
 Pre-bronchodilator FEV1/FVC | 72.23 ± 21.79 | 9.6–111.0 | 73.5 |
 Post-bronchodilator FEV1/FVC | 74.21 ± 21.55 | 9.7–105.0 | 80.2 |
Forced expiratory flow at 25–75% | 49.93 ± 32.26 | 0.0––109.0 | 53.0 |