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

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Upper 95% Confidence
Yes 2984 71.9 0.9 70.2 73.6
No 258 6.4 0.5 5.5 7.3
Don't know/not sure 854 21.7 0.8 20.1 23.2

Among all respondents, excluding refusals.
On Questionnaire Split A