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Related Experiment Videos

Puberty in Zambian children

M Katzarski, U K Rao, K Brady

    Medical Journal of Zambia
    |June 1, 1980
    PubMed
    Summary

    This study tracked puberty in Zambian school children. Pubic and axillary hair appeared around age 9-10, with the earliest menarche at 9.4 years and a mean of 13.7 years.

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    Area of Science:

    • Pediatrics
    • Human Growth and Development
    • Public Health

    Background:

    • Puberty onset varies globally.
    • Understanding Zambian children's pubertal development is crucial for health monitoring.

    Purpose of the Study:

    • To document the timing of pubertal milestones in Zambian school children.
    • To establish normative data for pubertal development in this population.

    Main Methods:

    • Cross-sectional study of 2,638 Zambian school children (1,220 boys, 1,418 girls) in Lusaka.
    • Assessed physical indicators: pubic hair, axillary hair, breast development (Tanner stages), and menarche.
    • Data collected through observation and self-reporting.

    Main Results:

    • Pubic and axillary hair first appeared in 9-year-old girls and 10-year-old boys.
    • Breast bud development (Stage 2) was observed starting at age 9 in girls.
    • The earliest menarche occurred at 9.4 years, with a mean age of 13.7 years for Zambian school girls.

    Conclusions:

    • The study provides key data on the timing of puberty in Zambian children.
    • Findings can inform pediatric health assessments and interventions in the region.
    • Establishes a baseline for future longitudinal studies on pubertal development in Zambia.

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