The schema newly classified 15.4% of persons without airflow obstruction as having COPD by minor diagnostic category, Surya P ...

A new chronic obstructive pulmonary disease (COPD) diagnostic schema integrating respiratory symptoms, respiratory quality of life ...

with more than three-quarters of individuals already having moderate or severe/very severe airflow obstruction at the time of diagnosis 6. The small airways, often referred to as the silent zone ...