Agency for Healthcare Research and Quality. HCUPnet, Healthcare Cost and Utilization Project, 2000-2020.
Centers for Disease Control and Prevention. Behavioral Risk Factor Surveillance Survey, 2021. 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 1999-2021, 2023.
Centers for Disease Control and Prevention. National Center for Health Statistics. National Health Interview Survey, 1999-2022. Analysis by the American Lung Association Research and Program Services Division using SPSS software.
Shah CH, Reed RM, Wastila L, Onukwugha E, Gopalakrishnan M, Zafari Z. Direct Medical Costs of COPD in the USA: An Analysis of the Medical Expenditure Panel Survey 2017–2018. Applied Health Economics and Health Policy. 2023; DOI: 10.1007/s40258-023-00814-8.
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.