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The Load Model: an alternative to QALY.

Tim Benson1,2

  • 1a R-Outcomes Ltd , Thatcham , UK.

Journal of Medical Economics
|August 26, 2016
PubMed
Summary
This summary is machine-generated.

A new Load Model offers a different perspective on health economic evaluation compared to the widely used Quality-Adjusted Life Year (QALY) model. This model re-evaluates the balance between morbidity and mortality, potentially impacting health outcome comparisons.

Keywords:
Cost-benefit analysisLoadMorbidityMortalityOutcome assessment (healthcare)Quality-adjusted life years

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Area of Science:

  • Health Economics
  • Decision Analysis
  • Outcome Measurement

Background:

  • Quality-Adjusted Life Years (QALYs) are standard in health economic evaluations but face criticism for not reflecting real-world behavior.
  • This study introduces the Load Model as an alternative conceptual framework.

Purpose of the Study:

  • To present and illustrate the Load Model.
  • To compare the Load Model with the existing QALY model in health economic evaluation.

Main Methods:

  • The Load Model defines Load as average annual weight of morbidity and mortality using preference judgments.
  • Morbidity Load is weighted by perceived illness severity; death has a negative weight.
  • The standard gamble method was used to derive weightings for an illness state in both Load and QALY models.

Main Results:

  • The Load Model assigns a significantly higher weight to the morbidity component relative to mortality compared to the QALY model.
  • Substantial differences were observed between the two models when comparing alternative health outcomes.

Conclusions:

  • The Load Model presents a different weighting of morbidity versus mortality than the QALY model.
  • The distinct results generated by the Load Model warrant further investigation given the importance of QALYs in economic evaluations.