Reference Standards for Stretched Penile Length in Indian Boys

Area of Science:

• Pediatric endocrinology
• Anthropometry
• Genetics

Background:

• Stretched penile length (SPL) is a critical anthropometric measurement for diagnosing and monitoring various conditions in children.
• Existing SPL reference data for Indian children is limited, hindering accurate clinical assessment.
• SPL variations can be indicative of congenital anomalies or systemic disorders.

Purpose of the Study:

• To systematically compile and analyze existing data on SPL in Indian children.
• To establish age-stratified reference values and centile curves for SPL.
• To improve clinical assessment and diagnostic accuracy for genital development disorders in Indian children.

Main Methods:

• A systematic review and meta-analysis adhering to PRISMA guidelines.
• Pooled data from six eligible studies involving 2,221 participants (28 weeks to 16 years).
• Generated reference values and centile curves (5th-95th) using R software.

Main Results:

• SPL increases non-linearly with age, showing distinct growth patterns in infancy, childhood, and puberty.
• Significant growth spurts were observed at ages 1-4 and during puberty, with slower growth between 4-10 years.
• Wide variability in SPL was noted between ages 5 and 9 years, necessitating specific reference data.

Conclusions:

• The study provides the first population-specific reference standards and centile curves for SPL in Indian children.
• These new data are vital for the accurate clinical assessment and diagnosis of genital development disorders.
• The findings will enhance healthcare outcomes by improving diagnostic accuracy in pediatric care.