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| Quality-adjusted life year ： ウィキペディア英語版 |
Quality-adjusted life year
The quality-adjusted life year or quality-adjusted life-year (QALY) is a generic measure of disease burden, including both the quality and the quantity of life lived.〔(【引用サイトリンク】work= )〕〔(【引用サイトリンク】work=Bandolier Journal Glossary )〕 It is used in assessing the value for money of a medical intervention. One QALY equates to one year in perfect health. If an individual's health is below this maximum, QALYs are accrued at a rate of less than 1 per year. To be dead is associated with 0 QALYs, and in some circumstances it is possible to accrue negative QALYs to reflect health states deemed 'worse than dead'.
==Use==
The QALY is often used in cost-utility analysis to calculate the ratio of cost to QALYs saved for a particular health care intervention. This is then used to allocate healthcare resources, with an intervention with a lower cost to QALY saved (incremental cost effectiveness) ratio ("ICER") being preferred over an intervention with a higher ratio.
In the United Kingdom, the National Institute for Health and Care Excellence, which advises on the use of health technologies within the National Health Service, has since at least 2013 used "£ per QALY" to evaluate their utility.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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