chronic bronchitis associated_with COPD
Evidence from:
primary |
all sources
Evidence (2 sources)
Time to First Morning Cigarette and Risk of Chronic Obstructive Pulmonary Disease: Smokers in the PLCO Cancer Screening Trial.
(2015)
PMID:25985429
cited
We defined COPD cases as participants who self-reported a diagnosis of ... chronic bronchitis ... or both.
confidence: 0.96
Time to First Morning Cigarette and Risk of Chronic Obstructive Pulmonary Disease: Smokers in the PLCO Cancer Screening Trial.
(2015)
PMID:25985429
cited
COPD cases ... were identified by self-reports of diagnosis of emphysema, chronic bronchitis, or both
confidence: 0.95