Table 3.

Spirometry results

	N = 22
	Mean ± SD	Range	Median
Forced vital capacity
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 1 s
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
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

FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; SD: standard deviation