 qualityadjusted life year qaly  qualityadjusted life year qaly 38 admin mon 10142019 1829 quality adjusted life year is a method to evaluate the health outcomes of interventions combined with the costs including both the quality and the quantity of life the indicator helps to evaluate the health outcomes of interventions programs and to allocate healthcare resources health benefits and value for money core quantitative qualityadjusted life method  method to calculate an economic indicator estimating the value of life health outcomes  changes in health that result from specific health care interventions programs medical costs questionaires used in trials preference surveys expected duration of life and degree of diability there are several ways to estimate qaly for instance calculate the years of life remaining for a patient and weight each year with a qualityoflife score on a  to 1 scale the basic idea underlying the qaly is simple it assumes that a year of life lived in perfect health is worth 1 qaly 1 year of life 1 utility 1 qaly and that a year of life lived in a state of less than this perfect health is worth less than 1 in order to determine the exact qaly value it is sufficient to multiply the utility value associated with a given state of health by the years lived in that state prieto sacristan 2003 p 2 number in physical units proportion ratio with numerator and denominator impact years quality score  to 1 monthly monthly calculating qaly or cost effectiveness thresholds is particularly complex the calculation methodology may need refinement to realize the financial advantages and opportunity costs yes extract from prieto sacristan 2013 p 7 available at  https hqlobiomedcentralcom articles 10118614777525180 full paper of prieto sacristan on computing qalys is available at  https hqlobiomedcentralcom articles 10118614777525180 patient wellbeing 