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Moderate"The CCHR considers ≥2 episodes of vomiting; a single episode is not a high-risk criterion. Failure to reach GCS 15 within 2 hours (A)Minor Head Injuryand age ≥65 (d) are high/medium risk features."

A 63-year-old man with minor head injury not on anticoagulants has GCS 15 and amnesia. Which variable is NOT part of the Canadian CT Head Rule high-risk criteria?

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