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Related Experiment Videos

Age at last birth and its components.

C M Suchindran1, H P Koo

  • 1University of North Carolina, Department of Biostatistics, Chapel Hill 27599-7400.

Demography
|May 1, 1992
PubMed
Summary
This summary is machine-generated.

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Twentieth-century American women adjusted fertility behaviors, including age at first birth and birth spacing, to complete childbearing at a young age. These fertility component changes influenced the timing of the last birth across different cohorts.

Area of Science:

  • Demography
  • Sociology
  • Reproductive Health

Background:

  • Fertility patterns significantly impact population dynamics and social structures.
  • Understanding the components of fertility timing is crucial for demographic analysis.
  • Previous research has not fully detailed how simultaneous changes in fertility components affect the age at last birth.

Purpose of the Study:

  • To analyze how twentieth-century American women's fertility behaviors evolved.
  • To decompose changes in the mean age at last birth by examining age at first birth, birth intervals, and parity progression.
  • To investigate differences in fertility timing between white and nonwhite cohorts.

Main Methods:

  • Developed a novel method to estimate fertility distributions and means from vital statistics.

Related Experiment Videos

  • Applied the method to age- and parity-specific fertility rates.
  • Analyzed changes in age at first birth, birth spacing, and parity progression ratios.

    • Main Results:

    • Cohorts exhibited complex, often opposing, changes in age at first birth, birth intervals, and parity progression.
    • These simultaneous adjustments in fertility components resulted in a relatively young age at last birth.
    • Significant variations were observed between white and nonwhite cohorts.

    Conclusions:

    • The timing of childbearing completion is a result of intricate interplay between fertility components.
    • Fertility behavior is adaptable, with cohorts employing diverse strategies to achieve reproductive timing goals.
    • Further research should explore the socioeconomic and cultural factors driving these observed fertility changes.