Have you ever been told by a doctor or health professional
that you have chronic obstructive pulmonary disease
(COPD), emphysema or chronic bronchitis?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Limit
Upper 95% Confidence
Limit
Yes 253 4.7 0.3 4.0 5.3
No 3808 95.3 0.3 94.7 96.0

Among all respondents, excluding unknowns and refusals.
 
On Questionnaire Split B