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, estimate insurance risks, and study species survival patterns in various ecosystems. In general, a typical life table is divided into several key columns:
Life tables can be categorized into cohort life tables, which track a group of individuals born during the same period over their lifetimes, and period life tables, which offer a snapshot of mortality rates for a population at a specific point in time.These tables are invaluable for understanding population health, forecasting future lifespans, calculating life insurance premiums, and comparing survival patterns across populations or groups. For example, they can highlight differences in life expectancy between countries or assess the impact of specific interventions on survival rates.
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