DALY (Disability-adjusted life year)
DEDALY (Behinderungsbereinigtes Lebensjahr)
The Disability-Adjusted Life Year (DALY) is the central metric of the Global Burden of Disease framework. It expresses a population's health loss, including the years you might lose, as a sum of two parts. The first is Years of Life Lost to premature death (YLL). The second is Years Lived with Disability (YLD). One DALY equals one year of healthy life lost. YLL is the number of deaths times the standard remaining life expectancy at the age of death. YLD multiplies how common a condition is by a 'disability weight' (0 to 1) that reflects its severity. Murray and Lopez developed it at Harvard in 1996, with WHO and the World Bank. DALYs now drive global health priorities. GBD 2019 estimated about 2.5 billion DALYs worldwide, with cardiovascular disease, newborn disorders, and cancers leading the burden.
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Sources
- Murray CJL, Lopez AD. (1996). The Global Burden of Disease: A Comprehensive Assessment of Mortality and Disability from Diseases, Injuries, and Risk Factors in 1990 and Projected to 2020. *Harvard School of Public Health on behalf of WHO and World Bank, Cambridge MA*
- Vos T, Lim SS, Abbafati C, et al.. (2020). Global burden of 369 diseases and injuries in 204 countries and territories, 1990-2019: a systematic analysis for the Global Burden of Disease Study 2019. *The Lancet*doi:10.1016/S0140-6736(20)30925-9
- GBD 2019 Viewpoint Collaborators. (2020). Five insights from the Global Burden of Disease Study 2019. *The Lancet*doi:10.1016/S0140-6736(20)31404-5