Accurate response rates of stroke symptoms by the participants in 9 items will include: sudden dizziness, sudden numbness or weakness of the arm or leg, especially on one side of the body, sudden trouble speaking or understanding, sudden trouble walking, loss of balance or coordination, sudden numbness or weakness of the face especially on one side of the body, sudden confusion, sudden severe headache with no known cause, sudden trouble seeing in one or both eyes, and nausea or vomiting.