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Related Concept Videos

Life Tables01:22

Life Tables

351
A life table is a statistical tool that summarizes the mortality and survival patterns of a population, providing detailed insights into the likelihood of survival or death across different age intervals within a cohort. By organizing data on survival probabilities and mortality rates, life tables offer a clear snapshot of population dynamics over time. They are extensively used in demography, public health, actuarial science, and ecology to analyze life expectancy, design health interventions,...
351
Applications of Life Tables01:22

Applications of Life Tables

191
Life tables are versatile across various fields, providing a quantitative basis for analyzing mortality and survival rates. Whether used by demographers, actuaries, epidemiologists, or sociologists, life tables offer valuable insights into the dynamics of life and death, facilitating informed decisions in public health, insurance, conservation, and beyond. Their broad applicability highlights the interconnectedness of demographic data with practical outcomes in everyday life and strategic...
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Actuarial Approach01:20

Actuarial Approach

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The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
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Life Histories01:29

Life Histories

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Population Growth00:57

Population Growth

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Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
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Survival Curves01:18

Survival Curves

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Survival curves are graphical representations that depict the survival experience of a population over time, offering an intuitive way to track the proportion of individuals who remain event-free at each time point. These curves are widely used in fields such as medicine, public health, and reliability engineering to visualize and compare survival probabilities across different groups or conditions.
The Kaplan-Meier estimator is the most common method for constructing survival curves. This...
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Related Experiment Video

Updated: Nov 27, 2025

Measurement of Lifespan in Drosophila melanogaster
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United States Life Tables, 2018.

Elizabeth Arias, Jiaquan Xu

    National Vital Statistics Reports : From the Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System
    |December 3, 2020
    PubMed
    Summary

    In 2018, US life expectancy at birth reached 78.7 years, a slight increase from the previous year. Hispanic populations showed the highest life expectancy at 81.8 years, while Black populations had the lowest at 74.7 years.

    Area of Science:

    • Demography
    • Public Health
    • Biostatistics

    Background:

    • Life tables provide crucial data on mortality patterns and life expectancy.
    • Understanding demographic trends by race, Hispanic origin, and sex is vital for public health initiatives.
    • Changes in race/ethnicity classification standards impact comparability of life expectancy data over time.

    Purpose of the Study:

    • To present complete period life tables for the United States for 2018.
    • To analyze life expectancy variations across different Hispanic origin, race, and sex groups.
    • To report on the impact of updated race classification standards on life expectancy estimates.

    Main Methods:

    • Utilized 2018 final mortality statistics and July 1, 2018 population estimates.

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  • Incorporated 2018 Medicare data for individuals aged 66-99.
  • Applied updated methodologies for estimating life tables, including new single-race categories.

    • Main Results:

    • Overall life expectancy at birth in 2018 was 78.7 years, a 0.1-year increase from 2017.
    • Life expectancy increased for both males (76.2 years) and females (81.2 years) in 2018.
    • In 2018, life expectancy was 81.8 years for Hispanics, 78.6 for non-Hispanic single-race White, and 74.7 for non-Hispanic single-race Black individuals.

    Conclusions:

    • US life expectancy shows a modest increase in 2018, with notable disparities across demographic groups.
    • The adoption of new race classification standards necessitates careful interpretation of trends.
    • Continued monitoring of life expectancy by detailed demographic categories is essential for addressing health inequities.