Canadian TIA Score

Estimate 7-day Risk of Stroke or Carotid Revascularization


The Canadian Transient Ischaemic Score is decision tool stratifies patients’ seven day risk for stroke, with or without carotid endarterectomy/carotid artery stenting, after presenting to the emergency department with a transient ischemic attack.
The score was found to be more accurate than the ABCD² and ABCD²I scores in determining risk for a stroke within 7 days of having a transient ischemic attack.

Scoring system & interpretation

  • Scores of -3 to 3 = Low Risk (0.5%)
  • Scores of 4 to 8 = Intermediate Risk (2.3%)
  • Scores of >8 = High Risk (5.9%)


The Canadian TIA Score calculator is created by QxMD.

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1. First TIA (in lifetime)?

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