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Concept

Life Expectancy

Public Health

The average number of years a person born in a given year is expected to live if current mortality patterns hold constant across their lifetime, the single most used summary indicator of a population overall health and one of the World Health Organization core reported statistics.

Facts
First Described Year
1662 1
First Described Era
1660s; the earliest documented work on life expectancy, including production of the first life table giving probabilities of survival by age, was done by John Graunt together with Christiaan Huygens and Lodewijck Huygens. 2
Concept Class
Public health, population statistics 3
Connections

Associated With

Source World Health Organization Official Site

In Branch

Source World Health Organization Official Site
Sources
1. Encyclopedia.com: John Graunt
Encyclopedia.com (Gale)Paragraph on the February 5, 1662 Royal Society distribution of Observations
Quote, Paragraph on the February 5, 1662 Royal Society distribution of Observations
On February 5, 1662, Graunt's newly-printed 90-page work, Observations, was distributed to the members in attendance at a meeting of England's Royal Society.
View the Source
2. Wikipedia: Life Expectancy
WikipediaHistory section
Quote, History section
The earliest documented work on life expectancy was done in the 1660s by John Graunt, Christiaan Huygens, and Lodewijck Huygens.
View the Source
3. World Health Organization Official Site
World Health OrganizationView the Source
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