Fig. 1From: Influence of viral infection on the relationships between airway cytokines and lung function in asthmatic childrenEffect of viral infection on spirometry in subjects with moderate-to-severe persistent (black symbols), mild persistent (grey symbols) and mild intermittent asthma (white symbols). FVC, FEV1, FEF25–75 and PEF are shown (mean ± SD). GEE models were used for pairwise comparison of the means (*p < 0.05)Back to article page