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Stroke knowledge: Sudden trouble seeing a symptom

Codes and Frequencies

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SKSEEING reports responses to a question about whether "[s]udden trouble seeing in one or both eyes" is a symptom "that someone may be having a stroke." Interviewers read a list of symptoms and asked respondents to answer "yes" or "no" to whether each was a symptom of a stroke. These symptoms included (besides SKSEEING):

  • Sudden numbness or weakness of face, arm, or leg, especially on one side (SKNUMBFACE)
  • Sudden confusion or trouble speaking (SKCONFUSE)
  • Sudden trouble walking, dizziness, or loss of balance (SKWALKING)
  • Sudden severe headache with no known cause (SKHEADACHE)

The Mayo Clinic website mentions all of the symptoms listed above as signs and symptoms of stroke.


This variable is comparable over time.


  • 2001; 2009; 2014; 2017: Sample adults age 18+.


  • 2001, 2009, 2014, 2017