ppt demography

• Demography is the study of human population
• Demography presents population data into a systematic manner
• Demography and population is inherently connected with various disciplines or development concerns
• Demography is fundamental in designing and implementing population management program and other development programs
• Sources of Population Data


  • Census
  • Vital Registration System
  • Sample Surveys
  • Administrative Records
• Population Outcomes


  • Population size
  • Population composition by age and sex
  • Population distribution (spatial)
• Population Processes


  • Fertility
  • Mortality
  • Migration
• The Philippines has a steadily growing population
• Calculating the Mid-year Population: Pmidyear = P1 + n/N x (P2-P1)
• Complete enumeration or count of population residing in a particular area, conducted by the National Statistics Office at desired intervals (usually 5 or 10 year intervals)

  census
• a given number usually expressed as k in the formula used to make a measure more understandable or meaningful

  constant
• usually the estimated population as of july 1 of the year for which the rate is being computed and approximation of the actual population exposed to the risk of a particular event

  mid-year population
• a proportion expressed as units per 100 or a proportion multiplied by 100

  percentage
• a group of individuals sharing a common demographic experience and observed through time

  cohort
• the rate computed for a disaggregated population on the basis of selected characteristics using only the population exposed to the risk of the event in the denominator

  specific rate
• relates one number to another number into a single number

  ratio
• measure the likelihood of the occurrence of an event among population within a specific period

  rate
• the rate computed for the entire population of a specified area regardless of exposure to the risk of the event using the entire population as the denominator

  crude rate
• the movement of an individual that involves crossing a territorial boundary for purposes of establishing residents can be internal or international, increases or decreases population

  migration
• the capacity of a woman or a couple to produce children, measured in terms of the number of

  fertility
• the complete absence or cessation of life

  mortality
• how the population can be described by age sex education economic status and cultural 


  population composition
• the pattern of settlement and dispersal of population within a country or subnational area

  population distribution
• the total number of population of a particular geographic or administrative area including all persons living in private households institutional quarters and land based ofws intending to return within a particular period

  population size
• information is based on the operations of particular agencies such as education data voters list health indicators ofw profiles

  administrative records
• the nso through the local civil registrars gathers information on vital events such as births deaths and marriages including dissolution of marriages

  vital registration system
• uses sample of the target population to produce estimates may be conducted for the national or subnational scale

  sample surveys