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Abortion Rate The variety of abortions per 1,000 women periods 15-44 or 15-49 in a offered year.

You are watching: In 1900, most deaths in the united states were caused by ____, whereas today most are due to ____.

Abortion Ratio The variety of abortions per 1,000 live births in a given year.

Acquired Immunodeficiency Syndrome (AIDS) Applies come the most advanced stages of HIV infection. That is characterized by the occurrence of any of much more than 20 opportunistic epidemic or HIV-related cancers.

Age-Dependency Ratio The ratio of persons in the ages characterized as dependency (under 15 years and also over 64 years) come persons in the ages identified as financially productive (15-64 years) in a population.

Age Structure The relationship of the total populace in each period group.

Age-Sex Structure The composition of a population as established by the number or proportion of males and females in each age category. The age-sex structure of a population is the cumulative result of previous trends in fertility, mortality, and also migration. Info on age-sex ingredient is vital for the summary and evaluation of plenty of other varieties of demography data. Check out also populace pyramid.

Age-Specific Rate Rate derived for details age teams (for example, age-specific fertility rate, fatality rate, marriage rate, illiteracy rate, or school enrollment rate).

Aging that Population A procedure in i m sorry the proportions the adults and elderly increase in a population, while the proportions of children and teenagers decrease. This procedure results in a increase in the median period of the population. Aging occurs as soon as fertility rates decline while life expectations remains consistent or enhances at the older ages.

Antinatalist Policy The policy of a government, society, or social group to slow populace growth by attempting to limit the number of births.

Antiretroviral treatment (ART) Treatment of human being infected with person immunodeficiency virus (HIV) using anti-HIV drugs. The conventional treatment is composed of a mix of at least three drugs (often dubbed “highly active antiretroviral therapy” or HAART) the suppress HIV replication. 3 drugs are supplied in stimulate to reduce the likelihood that the virus occurring resistance. ART has actually the potential both to alleviate mortality and also morbidity rates amongst HIV-infected people, and to boost their high quality of life.

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Baby Boom A dramatic boost in fertility rates and in the absolute variety of births in the united States, Canada, Australia, and new Zealand during the period following human being War II (1947-1961).

Baby Bust A rapid decline in U.S. Fertility prices to record-low levels during the duration immediately ~ the infant boom.

Balancing Equation A basic demographic formula provided to calculation total population change between two points in time — or come estimate any unknown ingredient of population change, noted that the other contents are known. The balancing equation has all contents of population change: births, deaths, immigration, emigration, in-migration, and out-migration.

Birth Control Practices work by couples that permit sex-related intercourse with reduced likelihood of conception and birth. The ax birth regulate is often used synonymously v such terms as contraception, fertility control, and also family planning. But birth control consists of abortion to avoid a birth, whereas family members planning methods explicitly do not incorporate abortion.

Birth rate (or crude bear rate) The variety of live births every 1,000 populace in a provided year. Not to be puzzled with the growth rate.

Birth price for Unmarried Women The number of live births every 1,000 unmarried ladies (never married, widowed, or divorced) eras 15-49 in a provided year.

Brain Drain The emigration the a far-ranging proportion of a country’s highly skilled, extremely educated expert population, normally to other countries offering much better economic and social opportunity (for example, doctors leaving a developing country to practice medication in a arisen country).

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Carrying Capacity The best sustainable size of a resident population in a provided ecosystem.

Case Fatality Rate The proportion of persons contracting a condition who dice from it throughout a specified time period.

Case Rate The number of reported instances of a specific an illness per 100,000 populace in a given year.

Cause-Specific death Rate The number of deaths attributable to a specific cause every 100,000 populace in a offered year.

Census A canvass of a provided area, leading to an enumeration the the entire population and frequently the compilation of various other demographic, social, and also economic information pertaining to that population at a particular time. See additionally survey.

Childbearing Years The reproductive period span of women, assumed because that statistical purposes to it is in 15-44 or 15-49 years of age.

Child-Woman Ratio The number of children under period 5 per 1,000 women periods 15-44 or 15-49 in a populace in a offered year. This rudely fertility measure, based on an easy census data, is periodically used when an ext specific fertility information is not available.

Closed Population A populace with no migratory flow either in or out, therefore that transforms in populace size occur only with births and also deaths.

Cohort A group of people sharing a common temporal demographic endure who space observed through time. Because that example, the birth cohort of 1900 is the world born in the year. There are also marriage cohorts, school class cohorts, and so forth.

Cohort Analysis Observation that a cohort’s demographic actions through life or through countless periods; for example, evaluating the fertility behavior of the cohort of world born between 1940 and also 1945 with their entire childbearing years. Rates derived from such cohort analyses space cohort measures. To compare with duration analysis.

Completed Fertility Rate The variety of children born per mrs to a cohort of females by the end of their childbearing years.

Consensual Union Cohabitation by an unmarried pair for one extended period of time. Although together unions might be quite stable, they room not related to as legal marriages in official statistics.

Contraceptive Prevalence Percentage the couples right now using a contraceptive method.

Contraceptive Use The percent of currently married or “in union” females (unless otherwise indicated) of reproductive period who are currently using any form of contraception. Contemporary methods make up clinic and supply methods, consisting of the pill, injectable, implant, IUD, condom, and sterilization.

Crude Rate Rate of any kind of demographic event computed for whole population.

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Death rate (or crude fatality rate) The number of deaths per 1,000 populace in a offered year.

Demographic Transition The historical shift of birth and also death prices from high to short levels in a population. The mortality decline usually comes before the fertility decline, resulting in rapid populace growth during the transition period.

Demography The scientific study of person populations, including their sizes, compositions, distributions, densities, growth, and also other characteristics, and the reasons and aftermath of alters in this factors.

Dependency Ratio A dependency proportion is the ratio of people in a dependent age group (those under age 15 or periods 65 and also older) come those in the economically productive period group (ages 15 to 64) of a population. For instance, a son dependency proportion of 0.45 way there room 45 youngsters for every 100 working-age adults.

Depopulation The state of populace decline.

Divorce rate (or crude oil divorce rate) The number of divorces per 1,000 populace in a offered year.

Double Dependency Moderate son dependency and relatively high old-age exposed reflect above or close to replacement fertility and declining mortality.

See more: Temperature Is A Measure Of The Amount Of Heat Stored In A Substance.

Doubling Time The variety of years required for the population of one area to twin its current size, given the existing rate of population growth.