Fig. 4From: A comparison of tiotropium, long-acting β2-agonists and leukotriene receptor antagonists on lung function and exacerbations in paediatric patients with asthmaPooled treatment difference in peak (a) and trough (b) FEV1 response between tiotropium Respimat® and placebo added to ICS for patients with symptomatic moderate asthma and patients with symptomatic severe asthma. CI, confidence interval; FEV1, forced expiratory volume in 1 s; ICS, inhaled corticosteroidBack to article page