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This is often discussed in terms of three basic theories or scenarios first set out in the late 1970s and early 1980s that considered the health of older people in view of increasing life expectancies: ‘expansion of morbidity’, ‘compression of morbidity’ and ‘dynamic equilibrium’.
28 Αυγ 2017 · By definition, life expectancy is based on an estimate of the average age that members of a particular population group will be when they die. In practice, however, things are often more complicated: One important distinction and clarification is the difference between cohort and period life expectancy.
3 Μαρ 2021 · Demographic data on age-specific mortality are used to estimate life expectancy, and validated data on exceptional life spans are used to study the maximum length of life. In the countries doing best each year, life expectancy started to increase around 1840 at a pace of almost 2.5 y per decade.
7 Μαρ 2012 · Some of these concepts—such as “life cycle” and “life expectancy”—have long and prodigious histories as conceptual tools within the life sciences. Others—such as the “life course”—are relatively new, emerging as a bona fide scientific concept only in the past several decades.
22 Μαρ 2021 · In ‘Why I Hope to Die at 75,’ a relatively recent contribution to this debate, bioethicist and medical doctor Ezekiel Emanuel answers the first question above, regarding the desired length of life, with a case for dying at 75 (Emanuel 2014).
Life expectancy has long been seen as an indicator of the quality of life as well as the health of a population. Recent trends in US life expectancy show growing inequality in life expectancy for some socioeconomic and geographic groupings but diminishing inequality by race and gender.
1 Ιαν 2011 · Assuming uniform reductions in death rates at every age, age-specific death rates for the United States in the year 2000 would have to decline by over 99% to achieve a life expectancy at birth of 100 for the population of the United States.
