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Related Experiment Videos

A decision-analytic approach to postexposure rabies prophylaxis

S B Cantor1, R D Clover, R F Thompson

  • 1Department of Family Medicine, University of Texas Medical Branch at Galveston 77555-0853.

American Journal of Public Health
|July 1, 1994
PubMed
Summary

Postexposure rabies prophylaxis is recommended when the probability of animal rabies is high. While beneficial for patients, treatment may not be cost-effective if rabies probability is low.

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Area of Science:

  • Public Health
  • Decision Science
  • Pharmacoeconomics

Background:

  • Rabies remains a significant public health concern globally.
  • Postexposure prophylaxis (PEP) is critical for preventing rabies after potential exposure.
  • Evaluating the clinical and economic value of PEP is essential for resource allocation.

Purpose of the Study:

  • To analyze the risks and benefits of postexposure rabies prophylaxis.
  • To determine the optimal conditions for initiating PEP from both clinical and economic viewpoints.
  • To assess the cost-effectiveness of rabies PEP.

Main Methods:

  • A decision-analytic model was developed using literature and health department data.
  • Health outcomes were quantified using quality-adjusted life years (QALYs).

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  • Sensitivity analyses were performed to evaluate the robustness of the findings.

    • Main Results:

    • Treatment with PEP is considered optimal when the probability of animal rabidity exceeds 1 in 2000 in the base case scenario.
    • The incremental cost-effectiveness ratio was calculated at $140,000 per QALY.
    • The decision to treat was robust across sensitivity analyses, but cost-effectiveness varied with rabies probability.

    Conclusions:

    • Postexposure rabies prophylaxis is clinically optimal for patients.
    • Cost-effectiveness of PEP is highly dependent on the probability of rabies exposure.
    • Low probability of rabies may render PEP not cost-effective, necessitating careful risk assessment.