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 ?
The expectation of life at 2012 for a life aged x last birthday is the sum over all t from 0 upwards of (t + 1/2) * pd_{x + t, t}.
It will take 8-10 years before emerging results can be compared with current expectation of life estimates being made.
1 children per woman during 1911-1961, however, and that female expectation of life at birth rose linearly from 20 years for 1926-1931 to a value in the 30s for 1961-1966.
The expectation of life formula applied to collection management.
Even for those who survived their earliest years, the expectation of life was much lower than in our society.
The preparatory Asian Regional Conference of the ILO adopted in 1947 at New Delhi, a resolution in which it urged that "in view of the extreme poverty, the wide prevalence of disease, epidemics, the high incidence of infant and maternal mortality, the low expectation of life and the misery & destitution caused by unemployment and under-employment among the working people of most Asian countries, the establishment of social security services which are an essential condition of building up genuine democratic society, has become an urgent task.
The gains in the expectation of life resulting due to the elimination of specific groups of death-causing diseases will be estimated by the difference in life expectancies between 'regular life table' (all causes combined) and 'cause of death deleted tables'.
Globally, expectation of life nearly doubled during the 20th Century; in most of the developed world, it rose by about 30 years to a value of nearly 80.
Karius oozes self confidence and could be an instant hit but it's a big step up from Mainz, adjusting to the pressure and expectation of life at Anfield, as well as the physicality of the Premier League.
Some wilt under the pressure and expectation of life at Anfield but Mignolet has flourished following his PS9m move from the North East.
McGovern admits his expectation of life at Dingwall has been exceeded.
Furthermore, the expectation of life at birth is estimated at 78.