3,477
Participants
Start Date
April 30, 2012
Primary Completion Date
December 31, 2021
Study Completion Date
December 31, 2021
Severe exacerbation frequency
A severe exacerbation will be primarily defined as a hospitalization (with or without ICU) or an emergency department visit as a result of worsening of COPD symptoms.
Incheon St. Mary's Hospital, Incheon
Seoul St. Mary's Hospital
OTHER
Hallym University Medical Center
OTHER
Konkuk University Hospital
OTHER
Joon Young Choi
OTHER