How these Data are Estimated
Until 2014, the number of people living with chronic obstructive pulmonary disease (COPD) was estimated based on how many answered yes to questions on the Centers for Disease Control and Prevention’s National Health Interview Survey (CDC, NHIS) asking if they had been diagnosed with either chronic bronchitis or emphysema, the two primary components of COPD. The NHIS provides nationally representative estimates for many health factors and diseases based on in-home interviews with randomly selected people. Trends and demographic differences for these two diseases are presented first before discussing results based on the addition of a new, third COPD question. We will then discuss the possible underdiagnoses of this condition.
- From 1999 to 2018, chronic bronchitis rates decreased at an average of 1.5 percent per year.
- Historically, emphysema has been more common among men than women. However, rates have converged over the last two decades as the rate among men has decreased and the rate among females has increased.
- Agency for Healthcare Research and Quality. HCUPnet, Healthcare Cost and Utilization Project, 1993-2016.
- Centers for Disease Control and Prevention. Behavioral Risk Factor Surveillance Survey, 2018. Analysis by the American Lung Association Epidemiology and Statistics Unit using SPSS software.
- Centers for Disease Control and Prevention. National Center for Health Statistics. CDC WONDER On-line Database, compiled from Underlying Cause of Death 1999-2018, 2020.
- Centers for Disease Control and Prevention. National Center for Health Statistics. National Health Interview Survey, 1999-2018. Analysis by the American Lung Association Research and Program Services Division of using SPSS software.
- National Heart Lung and Blood Institute. Morbidity and Mortality: 2009 Chart Book on Cardiovascular, Lung and Blood Diseases.
- Tilert T, Dillon C, Paulose-Ram R, et al. Estimating the U.S. Prevalence of Chronic Obstructive Pulmonary Disease Using Pre- and Post-Bronchodilator Spirometry: The National Health and Nutrition Examination Survey (NHANES) 2007–2010. Respiratory Research. 2013; 14(1):103.
- United States Census Bureau. Population Estimates, 2009.