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Pubertal development in Swiss girls.

R H Largo, A Prader

    Helvetica Paediatrica Acta
    |August 1, 1983
    PubMed
    Summary

    This study tracked pubertal development in 142 Swiss girls, finding earlier onset and completion of stages than previously reported. Correlations were observed between pubertal milestones and the adolescent growth spurt.

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    Area of Science:

    • Pediatric Endocrinology
    • Human Growth and Development
    • Longitudinal Studies

    Background:

    • Understanding the timing and progression of pubertal development is crucial for assessing normal growth and identifying potential endocrine issues.
    • Longitudinal data provides valuable insights into the variability and interrelationships of pubertal milestones.

    Purpose of the Study:

    • To document the timing, duration, and sequence of pubertal development in a cohort of Swiss females.
    • To examine the relationships between different pubertal stages, menarche, and the adolescent growth spurt.

    Main Methods:

    • Longitudinal observation of 142 Swiss females from age 8 to 18.
    • Assessment of genital and pubic hair development using TANNER staging.
    • Recording of age at initiation and completion of pubertal stages, menarche, and peak height velocity (PHV).

    Main Results:

    • Pubertal development initiated between 8-15 years and completed between 12-18 years, with earlier stages than previously reported.
    • Pubic hair development preceded breast development in 53% of girls; 33% omitted breast stage 4.
    • Strong correlations found between completion ages of pubertal stages, menarche, and PHV; similar timing to growth spurt observed in both sexes.

    Conclusions:

    • Pubertal development in Swiss females occurs earlier than historically documented, with significant inter-individual variation.
    • The timing of pubertal milestones is interconnected, particularly with the adolescent growth spurt.
    • The study highlights the importance of longitudinal data for understanding normative pubertal trajectories.

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