Dataset from A Multicenter, Randomized, Double-blind, Parallelgroup Study to Evaluate the Efficacy and Safety of the Addition of Umeclidinium Bromide Inhalation Powder (62.5mcg) Once-daily to Fluticasone Propionate/Salmeterol (250/50mcg) Twice-daily, Umeclidinium Bromide Inhalation Powder (125mcg) Once-daily to Fluticasone Propionate/Salmeterol (250/50mcg) Twice-daily Versus Placebo to Fluticasone Propionate/Salmeterol (250/50mcg) Twice-daily Over 12 Weeks in Subjects With COPD.

The purpose of this 12 week study is to evaluate the effects of the addition of umeclidinium bromide (62.5mcg) once-daily to fluticasone propionate (250/50mcg) twice-daily and umeclidinium bromide (125mcg) once-daily to fluticasone propionate (250/50mcg) twice-daily with placebo when added to fluticasone propionate (250/50mcg) twice-daily on lung function, COPD-related health status assessments and safety in COPD subjects.