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From Citizendium, the Citizens' Compendium

• U.S. Demographic History [r]: Historic trends in population growth, geographical distribution by states and urban-rural, internal migration, and components of change (births, deaths, immigration), as well as race and ethnicity, and population policy as they relate to the United States. [e]

• Malthusianism [r]: A theory in demography which holds that population expands faster than food supplies and famine will result unless steps are taken to reduce population growth. [e]

• Epidemiology [r]: The branch of demography that studies patterns of disease in human or animal populations. [e]

• Fertility (demography) [r]: The demographic analysis of having babies. [e]

• Mortality (demography) [r]: Mortality is the branch of demography that studies rates and causes of deaths for a population as a whole. [e]

• Infant mortality [r]: A concept in demography that estimates the "rate of deaths occurring in the first year of life". [e]

• Life expectancy [r]: A concept in demography that measures the mean number of years of life for babies born in a specified year. [e]

• Demographic transition [r]: The theory that societies progress from a premodern regime of high fertility and high mortality to a postmodern regime of low fertility and low mortality. [e]