Disability Adjusted Life Years- DALY

From Wikipedia;

The disability-adjusted life year (DALY) is a measure of overall disease burden, expressed as the number of years lost due to ill-health, disability or early death. Originally developed by Harvard University for the World Bank in 1990, the World Health Organization subsequently adopted the method in 2000. The DALY is becoming increasingly common in the field of public health and health impact assessment (HIA). It "extends the concept of potential years of life lost due to premature death...to include equivalent years of ‘healthy’ life lost by virtue of being in states of poor health or disability."^[2] In so doing, mortality and morbidity are combined into a single, common metric.

Traditionally, health liabilities were expressed using one measure: (expected or average number of) Years of Life Lost (YLL). This measure does not take the impact of disability into account, which can be expressed by: Years Lived with Disability (YLD). DALYs are calculated by taking the sum of these two components. In a formula:

DALY = YLL + YLD.^[3]

This article doesn't think much of it.

http://economics.ouls.ox.ac.uk/12726/1/20506.pdf

This one suggests it takes 3.82 years off of stroke survivors.
http://ovihealth.com/complications-of-a-stroke-take-healthy-living-for-2-years/

Complication of acute stroke: A study in ten Asian
countries:
http://www.neurology-asia.org/articles/20081_033.pdf