Chronic obstructive pulmonary disease (COPD) is persistent narrowing (obstruction) of the airways that develops along with emphysema, chronic obstructive bronchitis, or both. Which of the following statements about COPD in the United States is correct?
Approximately 2 million Americans have COPD
COPD affects men more often than women
COPD is the third most common cause of death
The number of deaths from COPD has decreased in the past 10 years.
