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Acute Streptococcal Pharyngitis: Sensitivity and Specificity

Introduction: None written.

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Tags: Infection Tag this Diagnosis.

Differential Diagnoses include: Kawasaki Disease, Viral Pharyngitis

The sensitivity and specificity of findings for Acute Streptococcal Pharyngitis are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Sensitive and Specific Findings
FindingResult SensitivitySpecificity
[ + ] Throat Culture + 0 - 100%100%
[ + ] Modified Centor Criteria + 0 - 85%92%
[ + ] Rapid Streptococcal Antigen Test + 0 - 91.1%89%
Specific Findings
FindingResult SensitivitySpecificity
[ + ] Rapid Streptococcal Antigen Test + 0 - 83%99%
[ + ] hearing loss + 0 - 20%93%
[ + ] Centor Criteria + 0 - 15%90%
Poorly Diagnostic Findings
FindingResult SensitivitySpecificity
[ + ] Physical Exam + 0 - 71%77%
[ + ] Centor Criteria + 0 - 33%77%
[ + ] Centor Criteria + 0 - 48%67%