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.
Clareo Health | Investigation of Chronic Obstructive Pulmonary Disease (COPD) Phenotypes and Endotypes in China
