life expectancy


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life expectancy

[′līf ik′spek·tən·sē]
(biology)
The expected number of years that an organism will live based on statistical probability.
(engineering)
The predicted useful service life of an item of equipment.

life expectancy

the number of years the average member of a social group can expect to live. This is largely determined by environmental factors, though improvements in these do not lead to an infinitely extendable life expectancy, since the maximum period of existence of a member of the human species remains at about 110 years and biological factors impose limits less than this for most humans. The average life expectancy at birth in the UK in the late 20th-century was for men 71, and for women 76, and this has changed little in the last half century However, there is variation according to social class and region. Currently these demographic differences are widening, with life expectancy in the north of England and Scotland being significantly less than that in the south. See also BLACK REPORT, DEATH RATE AND MORTALITY RATE.
References in periodicals archive ?
But up the coast in the Norham and Islandshires area, which stretches from Carham to Holy Island in Northumberland, a male infant has a life expectancy of 85.
Desirable life habits are necessary to narrow the gap between life expectancy and life span for the entire human population.
Registrar General for Scotland Tim Ellis said: "Every council area of Scotland has seen an increase in life expectancy over the past decade but there is still a lot of variation between areas.
Healthy life expectancy across Merseyside At the top of Lance Lane, near the Picton Clock Tower, in Wavertree, healthy life expectancy for a man is just 56.
Between the 1989-1991 data period and the 1999-2001 data period, people in some groups appeared to suffer a drop in average life expectancy.
In contrast, "Oglala Lakota County, South Dakota - a county that includes the Pine Ridge Native American reservation - revealed the lowest life expectancy in the country in 2014 at 66.
In Birmingham, healthy life expectancy for men is 58 years and for women it is 58.
Redcar and Cleveland had the best life expectancy for baby boys on Teesside at 78.
In the two largest Turkish cities, ystanbul and Ankara, life expectancy averaged 77.
The annual statistics report showed that low-income countries have made the greatest progress, with an average increase in life expectancy by 9 years from 1990 to 2012, higher than the global average increase level of six.
WHO's 2014 statistics put the life expectancy at birth of Israel's men at 80.