Has a doctor, nurse, or other health professional EVER
that you have chronic obstructive pulmonary disease (COPD),
emphysema or chronic bronchitis?

Response Unweighted Frequency Weighted Percentage Standard Error 95% Confidence Limit
Lower Upper
Yes 1658 6.6 0.2 6.2 7.0
No 18959 93.4 0.2 93.0 93.8

Among all respondents, excluding unknowns and refusals.