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Inputs used

Breakdown

Calculation steps

Returned data table

Input contract

• Scoring model — 2 choices
• Age — years; minimum 3; maximum 120
• Fever documented above 38 °C — 2 choices
• Cough absent — 2 choices
• Tonsillar swelling or exudate documented — 2 choices
• Tender anterior cervical nodes documented — 2 choices

Worked example

McIsaac score = 1 + 1 + 0 + 0 + 0 age adjustment = 2 points.

Assumptions and limits

• The findings were assessed and documented by an appropriate clinician or approved pathway.
• Fever means a documented temperature above 38 °C in the scoring convention used here.
• The tonsillar field represents the documented swelling or exudate component, not a guess from throat discomfort alone.
• The modified model applies the displayed age bands and the classic model does not add an age point.
• The score is intended for the clinical population and pathway in which the selected model has been validated.
• A score does not replace rapid testing, culture, examination, differential diagnosis, or local antimicrobial guidance.
• The calculator does not assess airway compromise, peritonsillar infection, dehydration, or other urgent causes of sore throat.
• Children younger than the displayed lower bound and people with rapidly worsening symptoms need professional assessment rather than extrapolation.

Calculator note