Do you think shortness of breath is a symptom of a heart attack?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Limit
Upper 95% Confidence
Limit
Yes 3689 89.0 0.6 87.7 90.2
No 285 6.6 0.5 5.6 7.6
Don't know/not sure 174 4.4 0.4 3.6 5.3

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