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Changing Trends in Life Expectancy in Intellectual Disability over Time

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Life expectancy for individuals with intellectual disability (ID) is increasing, mirroring general population trends. Similar mortality causes suggest shared preventative healthcare opportunities for improved longevity in ID.

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Area of Science:

  • Public Health
  • Disability Studies
  • Gerontology

Background:

  • Historically, individuals with intellectual disability (ID) exhibit decreased life expectancy (LE) compared to the general population.
  • Recent research indicates a growing trend in LE for both the general population and individuals with ID.

Purpose of the Study:

  • To analyze trends in life expectancy (LE) and causes of mortality among individuals with intellectual disability (ID).
  • To identify potential reasons for improved LE in ID and areas for future health interventions.

Main Methods:

  • Review of recent studies on ageing and cause of death in populations with intellectual disability.
  • Comparative analysis of mortality trends between the ID population and the general population.

Main Results:

  • Life expectancy (LE) in individuals with intellectual disability (ID), while still lower than the general population, has shown significant increases in recent decades across Western societies.
  • Trends in LE increases appear similar between the general population and the ID population.
  • Major causes of mortality in ID share similarities with the general population.

Conclusions:

  • Improved LE in ID populations may be influenced by factors amenable to similar preventative healthcare interventions as the general population.
  • Further detailed studies on mortality in ID are necessary to pinpoint specific intervention areas for this population.