The QALY at 50: One story many voices

Area of Science:

• Health Economics
• Health Policy Analysis
• Outcomes Research

Background:

• The Quality-Adjusted Life Year (QALY) has been a subject of research for over 50 years.
• Its development is intertwined with the challenges faced by healthcare systems like the UK's National Health Service (NHS).
• While policy influences are documented, the methodological evolution of QALYs remains less explored.

Purpose of the Study:

• To provide a historical overview of the QALY's origins and development.
• To examine the theoretical contributions of key figures like Torrance, Bush, and Fanshel.
• To analyze the impact of seminal papers and ongoing methodological debates on QALY evolution.

Main Methods:

• Historical review of QALY development over 50 years.
• Analysis of two seminal papers foundational to QALY methodology.
• Examination of methodological debates and technological advancements (e.g., Google Scholar) aiding historical research.
• Inclusion of diverse expert commentary from health economics.

Main Results:

• Identifies and celebrates two seminal papers that significantly shaped early QALY development.
• Traces the historical trajectory and uptake of these foundational papers.
• Reviews key methodological debates and the QALY's adaptation to address them.
• Captures contemporary perspectives on future QALY research and policy applications.

Conclusions:

• The study offers a comprehensive historical perspective on QALY development, emphasizing methodological evolution.
• It underscores the importance of seminal works and ongoing debates in shaping QALYs.
• Expert insights provide a forward-looking view on the future utility of QALYs in research and policy.