Figure 5From: Fluticasone propionate/salmeterol 250/50 μg versus salmeterol 50 μg after chronic obstructive pulmonary disease exacerbationSummary of pre-dose morning FEV 1 during the 3-week stabilization period, over Weeks 0–26, and at endpoint, ITT population.FEV1= forced expiratory volume in one second; FP = fluticasone propionate; ITT = intent-to-treat; SAL = salmeterol.Back to article page