The prevalence of chronic obstructive pulmonary disease is 6% nationwide, but varies from less than 4% in Washington and Minnesota to more than 9% in Alabama and Kentucky, according to data from the Centers for Disease Control and Prevention. The findings were published in the CDC’s Morbidity and Mortality Weekly Report on Nov. 23.
A total of 13,306 adults who reported having chronic obstructive pulmonary disease (COPD) in the national survey also responded to the COPD module. Of these, 76% reported undergoing a diagnostic breathing test, 64% reported that COPD symptoms (specifically shortness of breath) had an adverse effect on their quality of life, and 51% reported taking at least one COPD medication (MMWR 2012; 61:938-43).
In age-adjusted comparisons, women were more likely to report COPD compared with men (7% vs. 5%, respectively). COPD prevalence decreased from an average of 10% among individuals making less than $25,000 per year to 3% in those making more than $75,000 per year, and the prevalence was lower among employed individuals, homemakers, and students compared with those who were unemployed, retired, or otherwise unable to work. The prevalence of COPD was highest in current smokers (13%) compared with former smokers (7%) and never smokers (3%).
Data were taken from the 2011 Behavioral Risk Factor Surveillance System (BRFSS) survey. Additional COPD data were collected in an optional COPD module about COPD diagnosis and quality of life. This module was part of the BRFSS in 21 states, the District of Columbia, and Puerto Rico.
The 2011 BRFSS was conducted via telephone, either landline or mobile. The survey population included adults aged 18 years and older throughout the United States.
The findings were limited by several factors including the absence of data on individuals in institutions or nursing homes and by the use of self-reports for COPD diagnosis, the researchers said. However, the report is the first to analyze data on COPD prevalence in all 50 states, the District of Columbia, and Puerto Rico, they noted. State-level health officials should focus surveillance efforts, educational campaigns, and interventions on areas of highest COPD prevalence, they added.
The study was supported by the CDC and the National Heart, Lung, and Blood Institute of the National Institutes of Health.