Week 6: Impact of ageing and degeneration on the population Flashcards
Define the Rule of 70
Mathematical equation to estimate the population growth
How do we measure crude birth rates
Number of live births/1000 persons/year
How do we measure crude death rates
Number of deaths/1000 persons/year
What 3 factors determine if a population grows or declines?
Birth rates
Death rates
Migration
Define demographics?
Study of human populations
Define the demographic transition?
transition from
High birth and dates rates to
Low birth and death rats
What is a population pyramid?
Illustration of the stucture of a population
How many stages is there in a demographic transition model? Define and describe each
4 stages
Stage 1: High birth and death rates
Stage 2: initial decrease in death rates. Birth rates still high
Stage 3: Decrease in death and birth rates
Stage 4: Steady state
Define epidemiology?
Investigation into the disease patterns in populations
Describe the epidemiological transition?
Shift for a pattern of infectious diseases towards degenerative diseases
Define life expectancy?
Prediction of the number of years a person can expect to live
Define mortality?
condition of being dead
Morbidity?
Condition of being ill or unhealthy
Define incidence rates?
The number of new events occuring in a specified time period
Define prevalence?
The number of cases of disease in a specific time period
