Chronic obstructive pulmonary disease among former United States Department of Energy workers: comorbidities and lung function changes

Clusters of COPD related comorbidities were identified. The most important predictors of lung function changes and decline were FEV₁, age, age at hire, and sex. The findings suggest that the important predictors of lung function changes and decline in this occupational cohort are different from those reported in the general population. Study findings may be useful for guiding enhanced monitoring efforts and control programs.