(Which of the following do you think is a symptom of a heart attack?
For each, tell me yes, no or you're not sure.)
d. Do you think sudden trouble seeing in one or both eyes
is a symptom of a heart attack?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Upper 95% Confidence
Yes 1240 31.9 0.9 30.1 33.6
No 1520 35.1 0.9 33.4 36.8
Don't know/not sure 1349 33.0 0.9 31.3 34.7

Among all respondents, excluding refusals.
On Questionnaire Split A