Figure 2

Summary of the FEV ₁ time course of mean absolute FEV ₁ from Day 1 pre-dose to 2 h post allergen challenge (A) and mean FEV ₁ change from allergen challenge post-saline baseline measure (B). Therapy was dosed between 6 pm and 8 pm on Days 1–28 and the allergen challenge initiated on Day 29 (between 4 pm and 7 pm). FEV₁ = forced expiratory volume in 1 s; FF = fluticasone furoate; L = litres; SE = standard error; VI = vilanterol. Not all subjects contributed data to all time points