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Pubertal staging in boys

F M Biro1, A W Lucky, G A Huster

  • 1Division of Adolescent Medicine, Children's Hospital Medical Center, Cincinnati, OH 45229, USA.

The Journal of Pediatrics
|July 1, 1995
PubMed
Summary
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This study identified the earliest signs of puberty in boys, defining stage PS2a by minimal pubic hair and testicular volume. This definition helps address concerns about delayed pubertal maturation.

Area of Science:

  • Pediatric endocrinology
  • Adolescent health
  • Human growth and development

Background:

  • Pubertal maturation is a critical developmental period in boys.
  • Accurate staging is essential for monitoring growth and identifying potential delays.
  • Current definitions may not fully capture the earliest signs of puberty.

Purpose of the Study:

  • To define the earliest clinical signs of pubertal maturation in boys.
  • To establish a precise marker for the onset of puberty.
  • To aid in the assessment of pubertal development and address concerns of delayed maturation.

Main Methods:

  • Longitudinal study of 515 boys aged 10-15 years over 3 years.
  • Bi-annual assessments including physical measurements and serum hormone levels.

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  • Correlation of clinical and hormonal data with pubertal stage (PS).

    • Main Results:

    • Age, height, weight, BMI, and sex steroid hormones correlated with pubertal stage.
    • Earliest stage (PS2a) defined by absence of pubic hair and testicular volume ≥3 cc.
    • 82% of boys in PS2a showed further maturation within 6 months.

    Conclusions:

    • Pubertal stage 2a (PS2a) represents the earliest identifiable stage of male puberty.
    • Including PS2a in staging criteria can alleviate concerns regarding perceived delayed maturation.
    • This definition allows for a more precise characterization of early pubertal development.