Association of Nonobstructive Chronic Bronchitis With Respiratory Health Outcomes in Adults

Importance

Chronic bronchitis has been associated with cigarette smoking as well as with e-cigarette use among young adults, but the association of chronic bronchitis in persons without airflow obstruction or clinical asthma, described as nonobstructive chronic bronchitis, with respiratory health outcomes remains uncertain.

Objective

To assess whether nonobstructive chronic bronchitis is associated with adverse respiratory...