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Centor Score (Modified) (for Streptococcal Pharyngitis)

Age range (in years)

Exudate of swelling on tonsils

Tender/swollen anterior cervical lymph nodes

Fever (Temparature >38°C OR 100.4°F)

Cough present?

Total Centor score

Probability of streptococcal pharyngitis

 

Formula

Centor scores of:

≤0 point: Probability of streptococcal pharyngitis: 1% - 2.5%.

1 point: Probability of streptococcal pharyngitis: 5% - 10%.

2 points: Probability of streptococcal pharyngitis: 11% - 17%.

3 points: Probability of streptococcal pharyngitis: 28% - 35%.

4-5 points: Probability of streptococcal pharyngitis: 51% - 53%.

 

Reference

McIsaac WJ, Kellner JD, Aufricht P, et al. Empirical validation of guidelines for the management of pharyngitis in children and adults. JAMA. 2004;291(13):1587. doi:10.1001/jama.291.13.1587