TOPLINE:

Individuals with chronic obstructive pulmonary disease (COPD) were vulnerable to even small increases in fine particulate matter < 2.5 μm in diameter (PM2.5), with significantly higher risk among those with comorbidities such as lung cancer, coronary arterial disease, or chronic kidney disease.

METHODOLOGY:

Researchers conducted a retrospective cohort analysis to assess the association between long-term exposure to PM2.5 and all-cause mortality in veterans with COPD.

They included 1,124,973 veterans (mean age, 68 years; 95.60% men) diagnosed with COPD between 2016 and 2019 who were enrolled in the Veterans Health Administration.

They obtained ambient PM2.5 concentrations from annual air pollution models from 2000 to 2016, available at NASA’s Socioeconomic Data and Application

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