Demography

• What is demography?

  The scientific study of human populations
• What are the main aspects studied in demography?

  Population size, structure/composition, and distribution in space
• What is demography?

  The scientific study of human populations
• According to Hauser and Duncan (1959), what does demography study?

  The size, territorial distribution, and composition of the population, changes therein, and the components of such changes
• What are the key aspects of demography?

  Population size, structure/composition, and distribution in space
• What factors affect population size?

  Natality, mortality, and migration
• According to Hauser and Duncan (1959), what does demography study?

  The size, territorial distribution, and composition of the population, changes therein, and the components of such changes
• What is the De Facto Method in population allocation?

  People are counted or allocated to the area where they were physically present at the time of the census
• What factors affect population size?

  Natality, mortality, and migration
• What is the De Jure Method in population allocation?

  People are counted or allocated to the place of their usual residence
• What is the De Facto Method in population allocation?


  People are counted or allocated to the area where they were physically present at the time of the census
• What does population composition determine?

  The number and percentage of the population according to important socio-demographic-economic variables
• What is the De Jure Method in population allocation?

  People are counted or allocated to the place of their usual residence
• What are the basic categories used to describe population composition?

  Age and sex
• What does population composition determine?

  The number and percentage of the population according to important socio-demographic-economic variables
• What is the birth rate?

  The number of births per 1000 population
• What are the basic categories used to describe population composition?

  Age and sex
• What is the death rate?

  The number of deaths per 1000 population
• What is the birth rate?

  The number of births per 1000 population
• What is emigration?

  The number of people leaving a country
• What is the death rate?

  The number of deaths per 1000 population
• What is immigration?

  The number of people moving to a country
• What is emigration?

  The number of people leaving a country
• How is the median age defined?

  The age below which we have 50% of the population
• What is immigration?

  The number of people moving to a country
• What does the age dependency ratio indicate?

  The economic drain on human resources due to dependents
• How is the median age defined?

  The age below which we have 50% of the population
• How is the age dependency ratio computed?

  As the ratio of the dependents to the economically active group
• What does the age dependency ratio indicate?

  The economic drain on human resources due to dependents
• Who are considered dependents in the age dependency ratio?

  Children (0-14 years) and the elderly (≥65 years)
• How is the age dependency ratio computed?

  As the ratio of the dependents to the economically active group
• How is the sex ratio calculated?

  By dividing the number of males by the number of females using a factor of 100
• Who are considered dependents in the age dependency ratio?

  Children (0-14 years) and the elderly (≥65 years)
• What does the sex ratio represent?

  The number of males for every 100 females in the population
• How is the sex ratio calculated?

  By dividing the number of males by the number of females using a factor of 100
• What is the population pyramid?

  • Graphical presentation of age and sex structure
  • Special type of histogram
  • Males shown on the left, females on the right
  • Youngest age group at the base, oldest at the top
  • Can graph actual population count or percentage
• What does the sex ratio represent?

  The number of males for every 100 females in the population
• What does a population pyramid indicate about health care management when there is high fertility and mortality?

  It indicates bad health care management
• What is the population pyramid and how is it structured?

  • Graphical presentation of age and sex structure
  • Male population on the left, female on the right
  • Youngest age group at the base, oldest at the top
  • Can graph actual population count or percentage
• What does a population pyramid indicate about health care management when there is low fertility and mortality?

  It indicates good health care management, but may need external forces and working community in the future