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When deaths exceed births: natural decrease in the United States.

K M Johnson

    International Regional Science Review
    |January 1, 1993
    PubMed
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    Natural decrease, driven by aging populations, lower fertility, and increased mortality, is increasingly impacting US regions. This study analyzes its causes, regional variations, and demographic drivers since 1950.

    Area of Science:

    • Demography
    • Population Studies
    • Public Health

    Background:

    • Natural decrease, defined as a rise in deaths over births, has become a significant demographic trend in the United States.
    • Understanding the regional variations and underlying causes of natural decrease is crucial for public health and policy planning.

    Purpose of the Study:

    • To delineate the incidence and regional variation of natural decrease in the US since 1950.
    • To identify and assess the demographic factors contributing to natural decrease.
    • To explore the implications of natural decrease on different areas.

    Main Methods:

    • Analysis of historical demographic data from 1950 onwards.
    • Examination of factors including age structure shifts, fertility rates, mortality trends, and migration patterns.
    Keywords:
    Age Distribution--changesAge FactorsAmericasComparative StudiesDemographic FactorsDeveloped CountriesFertilityFertility DeclineGeographic FactorsMigrationMortalityNorth AmericaNorthern AmericaPopulationPopulation CharacteristicsPopulation DynamicsResearch MethodologySpatial Distribution--changesStudiesUnited States

    Related Experiment Videos

  • Comparative assessment of regional variations in natural decrease.

    • Main Results:

    • Documented incidence and geographical spread of natural decrease across the US.
    • Quantified the relative impact of fertility declines, mortality increases, and age structure shifts.
    • Identified common characteristics of regions experiencing natural decrease.

    Conclusions:

    • Natural decrease is a growing demographic phenomenon in the US with significant regional disparities.
    • Shifts in age structure, declining fertility, and rising mortality are key drivers.
    • The findings have implications for future population dynamics and policy interventions.