Subjects with a diagnosis of COPD, for which RELVAR is indicated, who are naive to RELVAR will be included.

RELVAR 100 ELLIPTA contains fluticasone furoate, an inhaled corticosteroid and vilanterol, an ultra-long-acting Beta-2 agonist and it is indicated for the treatment of COPD (bronchitis chronic/emphysema). Post-marketing investigation of RELVAR 100 ELLIPTA will be carried out in this analysis.

The investigator will collect the information about all AEs (e.g., a disease, symptom, abnormal laboratory value) occurring after the start of RELVAR administration, regardless of whether or not RELVAR is related to an AE. The AEs assessed as 'related' to RELVAR will be handled as adverse drug reactions (ADRs).

Pneumonia, systemic effects such as suppression of adrenal cortical function, bone disorders, eye disorders, etc. caused by corticosteroids and cardiovascular events will be considered as priority investigation matter for this investigation and its occurrence will be monitored throughout the study period.

The efficacy rate is the proportion of subjects assessed as "effective." Efficacy will be globally assessed based on the courses of subjective and clinical symptoms, COPD exacerbation, changes in values for respiratory function tests, change in COPD assessment test (CAT) scores, etc. during the period between the start date of treatment and the end of the observation period.

The COPD exacerbations are episodes, which may refer to an increase in the severity of disease or its sign and symptoms. The presence or absence of exacerbation for one year before and after the start of treatment with RELVAR (or at the time of withdrawal/ termination), presence or absence of hospitalization, treatment with antimicrobial agents and/or systemic steroids and exacerbation not corresponding to the above-mentioned parameters in each exacerbation episode will be determined.