Equal Value of Life Years Gained
The Equal Value of Life Years Gained or evLYG is a generic measure used to determine how much a medical treatment can extend the life of the patient. Unlike other healthcare metrics, the evLYG does not consider the quality of life for the patient; it exclusively considers the length of life. It is used in economic evaluation to determine the added time a treatment may give a patient. Critics argue the evLYG measurement is flawed because it values a medication based solely on the added years of life. A higher priced drug that both extends life and adds two years of life receives the same evLYG score as a lower priced drug that adds two years but does not improve life
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