Life Span

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Life Span Life Expectancy

• Done by Deidre Brown

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Life expectancy

• Life expectancy is a statistical average of the
  number of years a human is expected to live.
• This is the average amount of years that an
  individual has before he or she dies. Which
  begins from the pre-natal period to the
  senescence period (old age)

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Life Span

• This is the maximum time period of a individual
  that is observed within a group

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Factors Influencing life Span life Expectancy

• Availability and cost of medical care - This
  factor mostly affect persons who are below the
  poverty level. Seeing that health is expensive
  and individuals cant offered health insurance or
  medicine to aid in the treatment of sickness or
  dieases.

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• Health and sanitation levels- if a country has
  high level of improper disposal of solid waste,
  industrial waste and untreated sewage. This will
  result in the country having high levels of air
  borne and water borne diseases. This will affect
  both the elderly and the adolescence.
• Poverty-Poor people can't afford healthy food,
  clean drinking water, top-notch medical care so
  this will cause persons to commit suicide or be
  involve in theft related crimes. Which leads us
  to our next factor.

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• Violence- this reduces the life span and life
  expectancy by the continuous increase in the
  level of violence in each country
• Lifestyle- If you are gay, are an IV drug user
  or engage in other types of high risk behavior,
  you reduce your life expectancy substantially

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• Genetic Disease- these are diseases that are
  passed down from one generation to the next.
  Example of these are cancer, diabetes
  hypertension etc

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Calculating life expectancy

• Life expectancy is calculated using a statistical
  tool called a life table. A life table is
  generated from current age- and sex-specific
  death rates in a given population. The resulting
  values are used to estimate the likelihood of
  someone in a hypothetical population dying before
  their next birthday.
• Calculating a persons life expectancy is based
  on death patterns in the population, and assumes
  that current death rates will persist throughout
  that persons life.

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figure 1.Life expectancy (years) at birth by
sex, 19011910 to 20102012
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