Demographic approach to population health assessment. Population statics. Age structure of the population. Population age pyramid. Medical and social implications of population aging.
Demographic approach to population health assessment:
- Study of mass events and processes related to population
- Number, condition, movement and reproduction of population
- Analyzed to socio-economic relations and whole society including public Health
- World population doubled since 1965
Age structure of the population:
- Age structure changes by time
- Bulgaria:
- Developing countries become older by time
- Factors like wars, baby booms etc. take large impact on change of Age structure of a country
Population age pyramid:
- Three basic shapes:
- Expansive (Progressive):
- Used to describe growing populations
- Show a large percentage of younger age cohorts
- Cohorts getting smaller with age
Typically representatives of developing countries (India in 2016)
- Stationary:
- Used to describe countries that are not growing
- Rectangular shape
- Display equal percentages across age cohorts
- Regressive pyramid:
- Declining birth rate
- Low mortality rate
- China’s trend in 100 years of time: One-child-policy and the developing process lets china’s age pyramid change to all types in time