A statistical technique used to make it possible to compare death or disease rates between populations with different age profiles. Without this statistical adjustment, a population that has a larger proportion of people in older age groups, for example, would appear to have a higher rate of people dying from diseases that occur in later life (for example, heart disease) than another population with greater numbers of younger people.
The share of the burden of a disease that is estimated to occur due to (“attributable to”) exposure to a particular risk factor (for example, the burden of lung disease that results from breathing air pollution versus that from smoking).
The principle of, or relationship between, cause and effect (for example, smoking causes lung cancer).
The ratio of disability-adjusted life-years (DALYs) to the population (number of people) of a particular area during a particular period of time. It is calculated in the GBD project as the number of DALYs per 100,000 people per year.
The ratio of deaths to the population (number of people) of a particular area during a particular period of time. It is calculated in the GBD project as the number of deaths per 100,000 people per year.
Disability-adjusted life years (DALYs)
Years of healthy life lost to premature (early) death and disability (illness). DALYs are the sum of years of life lost (YLLs) and years lived with disability (YLDs). (DALYs are higher when young people die compared with when old people die, because young people still had many years ahead of them.)
Fine particulate matter, or fine particles
Particulate matter less than or equal to 2.5 µm (micrometers) in aerodynamic diameter (or PM2.5).
Four world regions
Global regions used in the IHME analysis: Asia, Africa, America, and Europe.
Groups of countries that are geographically close and epidemiologically similar, as defined in the Global Burden of Disease (GBD) project. The “High-income North America GBD region,” for example, contains Canada and the United States of America, while the “South Asia GBD region” contains Bangladesh, Bhutan, India, Nepal, and Pakistan. See GBD regions.
Global Burden of Disease (GBD) regions are grouped into seven super-regions that exhibit similar cause-of-death patterns. The “Latin America and Caribbean super-region,” for example, contains the Caribbean, Central Latin America, Tropical Latin America, and Andean Latin America regions.
The seven super-regions are: High income; Latin America & Caribbean; Sub-Saharan Africa; North Africa & Middle East; South East Asia, East Asia & Oceania; South Asia; Central Europe, Eastern Europe & Central Asia.
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