Population Studies Flashcards
population
the collection of people in a defined geographical area
population growth rate
the rate of population change in a specified time period, reported as a percent of the initial population
overpopulation
point where there are more people than can be sustained
carrying capacity
total possible population that can be supported with relevant resources and without significant negative effects in a given area
population projections
estimates of future populations made from mathematical extrapolations of previous data, usually based on birth/death/migration rates, do not consider unpredicted effects on population
crude birth rate (CBR)
the annual number of births per 1000 people in a population (10-20=low 40-50=high)
crude death rate (CDR)
the annual number of deaths per 1000 persons in a population (less than 10=low above 20=high)
rate of population change
the difference between the crude birth rate and crude death rate
age-specific birth rates/age-specific death rates
annual number of births/deaths per 1000 persons in an age group
fertility
ability of a woman to reproduce
fecundity
potential reproductive capacity of a woman
general fertility rate
the annual number of births per 1000 women in a population
total fertility rate
predicts the total number of births per single woman in a population with the assumption that the woman experiences the current recorded age-specific fertility rates and reaches the end of her reproductive life
replacement fertility rate
the fertility rate at which the population will remain balanced
sub-replacement fertility
indicates that the birth rate is less than the death rate, thus the population size will not be sustained
population-lag effect
changes in total fertility rates are often not reflected in the birth rate for several generations, result of population momentum
population momentum
the children produced during periods of higher fertility rates reproduce; there are more women of reproductive age and thus more births overall, regardless of the number of births per women
mortality
the death rate in a population, includes both general and specific measures
morbidity
the nature and extent of disease in a population
prevalence rate
measures the number of individuals experiencing a disease
incidence rate
measures the number of new cases of a disease
case fatality rate
measures deaths as the result of a set diagnosis or procedures, sometimes specific to the beginning or late stages
infant mortality rate
the annual number of deaths per 1000 infants under one year of age
life expectancy
the number of years that an individual at a given age can expect to life at present mortality rates