QALY is an abbreviation for quality-adjusted life year (or quality-adjusted life-year) and is a generic measure of disease burden.
Quality of life
Qaly is a measure of the improved quality of life of a medical intervention.
Measurement of Quality of Life VI. Quality-Adjusted Life Years (QALY) is an Unfortunate Use of the Quality-of-Life Concept. Ventegodt S, Merrick J and Jorgen N. Andersen ScientificWorldJournal. 2003; 3: 1015–1019.