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Chronic Obstructive Pulmonary Disease and Smoking Status - United States, 2017
MMWR. Morbidity and Mortality Weekly Report
|June 21, 2019
Summary
Chronic obstructive pulmonary disease (COPD) affects many never-smokers, suggesting secondhand smoke exposure is a risk factor. Promoting smoke-free environments may reduce COPD prevalence for all adults.
Area of Science:
- Public Health
- Epidemiology
- Respiratory Medicine
Background:
- Cigarette smoking is the primary cause of chronic obstructive pulmonary disease (COPD) in the U.S.
- A significant portion of adults diagnosed with COPD have never smoked, indicating other contributing factors.
Purpose of the Study:
- To analyze the prevalence of COPD across different smoking statuses and geographic regions in the U.S.
- To investigate potential risk factors for COPD, including secondhand smoke exposure, among never-smokers.
Main Methods:
- Analysis of state-specific 2017 Behavioral Risk Factor Surveillance System (BRFSS) data.
- Examined age-adjusted COPD prevalence based on smoking status (current, former, never smokers).
- Correlated COPD prevalence with state-level smoking prevalence.
Main Results:
- Overall U.S. adult COPD prevalence was 6.2%.
- Prevalence was highest among current smokers (15.2%), followed by former smokers (7.6%), and never-smokers (2.8%).
- Higher COPD prevalence was noted in southeastern and Appalachian states, irrespective of smoking status, with a correlation observed even in never-smokers.
Conclusions:
- While smoking is a major COPD risk, secondhand smoke exposure may also contribute significantly, particularly among never-smokers.
- Geographic disparities in COPD prevalence exist, potentially linked to environmental factors.
- Promoting smoke-free environments is crucial for reducing COPD burden across all populations.
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