Investigation of Chronic Obstructive Pulmonary Disease (COPD) Phenotypes and Endotypes in China

Exclusion Criteria

• •Having undergone lung surgery.
• •Known respiratory disorders or significant inflammatory disease other than COPD.
• •Serious, uncontrolled disease (including serious psychological disorders)
• •Confirmed cancer, unless participants in remission for more than or equal to (\>=)5 years.
• •Participating or plan to participant in any clinical studies where investigational drugs were tested.
• •Unable or unwilling to use required digital devices (sub- cohort only).
• •Have evidence of alcohol or drug abuse.
• •Have received a blood transfusion in the 4 weeks prior to study start.
• •On long-term oral corticosteroids.
• •Unable to walk.
• •Unable to read and understand Mandarin Chinese.
• •Current primary diagnosis of asthma (participants with a primary diagnosis of COPD but who also had asthma \[Asthma COPD overlap {ACO}\] could be included).
• •Known disorders other than COPD that may significantly impact clinical assessments
• •Known disorders that may significantly impact clinical assessments.
• •FVC \<80% Predicted.