The average age of death for a population in a given area.
Natural increase rate
the difference between the number of live births and the number of deaths occurring in a year, divided by the mid-year population of that year, multiplied by a factor (usually 1,000).
Degenerative diseases
Change in the pattern of mortality in a society from high mortality among infants (including malnutrition and diarrheal disease) and periods of widespread famine to high mortality from degenerative diseases which coincide with longer life expectancies.
Crude birth rate (CBR)
Number of live births per 1000 people among a population in an area in a year.
Restrictive population policies
Government policies designed to reduce the rate of natural population increase (also called antinatalist).
Total fertility rate (TFR)
The average number of children born to a woman of child-bearing age.
Crude death rate (CDR)
Number of deaths per 1000 people among a population in an area in a year.
Arithmetic population density
Number of people per unit area of land. To calculate: Divide the population of an area by the amount of land (in sq miles or sq km)
Dot maps
Thematic map where individual symbols represent a certain number of cases of a phenomenon. For example, a map where one dot represents 100,000 people.
Infectious diseases
Diseases that are spread by bacteria, viruses, or parasites. Infectious diseases diffuse directly or indirectly from human to human.
