- To “establish regular tracking of Disability Adjusted Life Years (DALY) Index as a measure of burden of disease and its trends by major categories by 2022” is one key target that the National Health Policy 2017 (NHP) seeks to achieve.
Quantifying the Burden of Disease from mortality and morbidity
Definition Major Points
- One DALY can be thought of as one lost year of "healthy" life.
- The sum of these DALYs across the population, or the burden of disease, can be thought of as a measurement of the gap between current health status and an ideal health situation where the entire population lives to an advanced age, free of disease and disability.
DALYs for a disease or health condition are calculated as the sum of the Years of Life Lost (YLL) due to premature mortality in the population and the Years Lost due to Disability (YLD) for people living with the health condition or its consequences:
Calculation
where :
N= Number of Deaths
L= Life Expectancy
where:
- I = number of incident cases
- DW = disability weight
- L = average duration of the case until remission or death (years)
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