Real-World Treatment Patterns and Patient Reported Outcome in COPD (REMIND)

This retrospective observational study aims to report distribution of the proportion of symptomatic Chronic obstructive pulmonary disease (COPD) patients classified by the COPD Assessment Test (CAT) managed with single or dual inhaler treatment using the data at cohort entry in the COPD cohort study, and treatment change and longitudinal CAT score by each inhaler treatment will also be evaluated using the data during the follow-up period.