Chronic Obstructive Pulmonary Disease (COPD) Dual Therapy Burden of Illness

The main purpose of the study is to assess the burden of illness for, COPD using both patient-reported symptom burden and claims-based economic burden, among the subjects treated with single-inhaler dual therapy treatments, Fluticasone/Salmeterol FLUT/SAL; Advair) or Umeclidinium/Vilanterol (UMEC/VI; Anoro) to support Global Initiative for Chronic Lung Disease (GOLD) category B recommendations. The study will use a health plan recruitment strategy and subject's will be recruited using Optum's health plan recruitment strategy to collect information relating to the subject's condition history, current treatment, smoking history, symptoms and symptom severity (Modified Medical Research Council Dyspnoea Scale \[mMRC\] and COPD Assessment Test \[CAT\]), and demographic and sociodemographic characteristics. A total of 2700 subject's, are planned to be enrolled in the study to reach the target evaluable sample size, n=770 subjects. Following completion of data collection, results of the survey, will be merged with claims data, covering the 12-month Baseline period for analysis. Pharmacy and medical claims data, will be used to calculate all-cause and COPD-related health care utilization and costs, treatment patterns, and Baseline clinical characteristics. The study duration is estimated to be of 12-months.