QALY

Medical abbreviation · Medical Research

QALY
Stands forQuality-adjusted life year
CategoriesMedical

QALY stands for Quality-adjusted life year, a medical research abbreviation.

Measure combining length and quality of life, in which one year in perfect health equals one QALY and a year in a health state valued at 0.5 equals half a QALY. Health economists use QALYs to compare the value of treatments across different diseases.

Example: The therapy gains 0.8 QALYs at an extra cost of $120,000, or $150,000 per QALY.

Usage notes

England's NICE has historically considered treatments costing roughly £20,000 to £30,000 per QALY gained to be cost-effective. Critics argue that QALYs can undervalue life extension for people with disabilities, and US law restricts their use by some federal programs, including Medicare. Pronounced "KWAH-lee".

More medical research abbreviations

  • PMID – PubMed identifier
  • PP – Per-protocol (analysis)
  • PPV – Positive predictive value
  • PRISMA – Preferred Reporting Items for Systematic Reviews and Meta-Analyses
  • PRO – Patient-reported outcome
  • PROM – Patient-reported outcome measure
  • QoL – Quality of life
  • RCT – Randomized controlled trial
  • ROC – Receiver operating characteristic
  • RR – Relative risk
  • RRR – Relative risk reduction
  • RWD – Real-world data

See all 94 medical research abbreviations →

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.