Fig. 3From: A comparison of tiotropium, long-acting β2-agonists and leukotriene receptor antagonists on lung function and exacerbations in paediatric patients with asthmaTreatment difference in FEV1 response between LABA added to ICS and ICS alone. BUD, budesonide; CI, confidence interval; FEV1, forced expiratory volume in 1 s; form, formoterol; ICS, inhaled corticosteroid; LABA, long-acting β2-agonist; VI, vilanterolBack to article page