Fig. 3From: Comparison of therapeutic effects of inhaled corticosteroids on three subtypes of cough variant asthma as classified by the impulse oscillometry systemComparison of impulse oscillometry index at baseline (Pre) and after treatment (Post). The data are expressed as the mean ± SEM. Differences between pre and post were tested by Wilcoxon signed-rank test. **: p < .01Back to article page