Demography Flashcards
What does individual perspective focus on?
health
risk factors
exposures
casual mechanisms in people as individuals
What does population perspective focus on?
disorders of mass disease
exposures
casual mechanisms in people as group
What are the key events/processes that drive a countries population?
birth marriage migration age death
What are the key characteristics of a population that can have an impact on demographic?
size and density age distribution sex ratio geographical distribution ethnic composition level and distribution of education level and distribution of economic resources
What are the reasons for woman delaying childbirth?
Contraception more accessible
education - delays marriage and family planning skills
changes in support for families e.g. maternity and paternity leave/tax credits
How is birth rate calculated?
births in a year/mid year population of men and woman
How is fertility rate calculated?
births in a year/mid year population of woman of reproductive age
What effects life expectancy?
Most heavily influenced by mortality rates
Improvements in:
nutrition
hygiene
conditions of living (housing, child labor), immunizations
reductions in maternal mortality - reduced mortality among infants, children and women in their reproductive year
What is period life expectancy?
at a given age for an area is the average number of years a person would live, if he or she experienced the particular area’s age-specific mortality rates for that time period throughout his or her life
no allowance for any later actual or projected changes in mortality
What is cohort life expectancy?
calculated using age-specific mortality rates which allow for known or projected changes in mortality in later years
regarded as a more appropriate measure of how long a person of a given age would be expected to live, on average, than period life expectancy
What is the demographic transition model?
general pattern of changes in death rates, population growth, and birth rates that appears during the process of modernization
4 stages:
Stage 1 - birth and death rates are high
Stage 2 - birth rates high but death rates fall
Stage 3 - birth rates fall and death rates stay low
Stage 4 - birth and death rates low, population stabilises