FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Trough FEV1 at Week 24 was defined as the FEV1 values obtained prior to morning dose of the study treatment. Baseline was defined as the value obtained predose (0 minutes) on Day 1. Change from Baseline was calculated as the pre-dose measurement at Week 24 minus the Baseline value. The analysis was performed using a mixed model repeated measures (MMRM) method including covariates of treatment group, smoking status (screening), geographical region, visit, baseline, baseline by visit and treatment by visit interactions. ITT Population comprised of all randomized subjects excluding those who were randomized in error. Only participants with analyzable data at the given time point were analyzed.

FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Trough FEV1 at Week 52 was defined as the FEV1 values obtained prior to morning dose of the study treatment. Baseline was defined as the value obtained predose (0 minutes) on Day 1. Change from Baseline was calculated as the pre-dose measurement at Week 24 minus the Baseline value. The analysis was performed using a mixed model repeated measures (MMRM) method including covariates of treatment group, smoking status (screening), geographical region, visit, baseline, baseline by visit and treatment by visit interactions. Extension Population: all participants in the ITT Population who were enrolled into the subset of participants with extension to 52 weeks.

The SGRQ-C is a disease-specific questionnaire designed to measure the impact of respiratory disease and its treatment on a COPD participant's health-related quality of life (HRQoL). SGRQ-C total score was converted to SGRQ total score (ranging from 0-100) according to manual. In addition to an overall summary (total) score, scores for the individual domains of Symptoms, Activity, and Impacts (each ranging from 0-100) are produced. A decrease in score indicated improvement in quality of life. The minimum clinically important difference (MCID) for this instrument is a 4-point improvement (decrease from Baseline). Baseline was defined as the value obtained predose on Day 1. Change from Baseline was calculated as total score at Week 24 minus the Baseline value. The analysis for SGRQ total score was performed using a MMRM method including covariates of treatment group, smoking status (screening), geographical region, visit, baseline, baseline by visit and treatment by visit interactions

The SGRQ-C is a disease-specific questionnaire designed to measure the impact of respiratory disease and its treatment on a COPD participant's health-related quality of life (HRQoL). SGRQ-C total score was converted to SGRQ total score (ranging from 0-100) according to manual. In addition to an overall summary (total) score, scores for the individual domains of Symptoms, Activity, and Impacts (each ranging from 0-100) are produced. A decrease in score indicated improvement in quality of life. The minimum clinically important difference (MCID) for this instrument is a 4-point improvement (decrease from Baseline). Baseline was defined as the value obtained predose on Day 1. Change from Baseline was calculated as total score at Week 52 minus the Baseline value. The analysis for SGRQ total score was performed using a MMRM method including covariates of treatment group, smoking status (screening), geographical region, visit, baseline, baseline by visit and treatment by visit interactions.