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What a difference a day makes

A decision analysis of adult streptococcal pharyngitis

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Abstract

With the availability of group A beta-hemolytic streptococcal (GABHS) antigen detection tests, the management of adult pharyngitis is being reassessed. A decision analytic model was developed which considered four strategies: immediate treatment, no treatment, performing a rapid antigen test, or obtaining a bacterial culture. Patient outcomes were expressed in “well” days, which were reduced by the “sick” days associated with adverse reactions to treatment or complications of GABHS infection. When immediate test results are available, testing is the optimal strategy for probabilities of GABHS between 1 and 49 per cent. This range includes almost all patients, using probability estimates based on clinical criteria. The absolute benefit of testing was 0.1 days. The major advantage of a rapid test is the avoidance of penicillin reactions. Variations in the symptomatic benefits of treatment had minimal effects on the analysis. The analysis supports the use of an antigen test for adult patients with pharyngitis.

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Authors and Affiliations

  1. the American College of Physicians, USA

    Robert M. Centor MD (Teaching and Research Scholar)

  2. MCV Station, Box 170, 23298-0001, Richmond, VA

    Burce E. Hillner MD

Authors
  1. Burce E. Hillner MD
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  2. Robert M. Centor MD
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Additional information

Received from the Division of General Medicine and Primary Care. Department of Internal Medicine, Medical College of Virginia, Virginia Commonwealth University, Richmond. Virginia.

A preliminary version of this work was presented at the seventh annual meeting of the Society for Medical Decision Making, October 21, 1985.

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Hillner, B.E., Centor, R.M. What a difference a day makes. J Gen Intern Med 2, 244–250 (1987). https://doi.org/10.1007/BF02596449

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  • DOI: https://doi.org/10.1007/BF02596449

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