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Head Circumference for Growth Curves and Percentiles for 0-2-Year-Old Children in Ankara: Comparison with GAMLSS and

Eda Çakmak1, Serhat Kılıç2, Pınar Özdemir3

  • 1Department of Audiology, Başkent University Faculty of Health Sciences, Ankara, Türkiye.

Turkish Archives of Pediatrics
|January 13, 2025
PubMed

Insights

This study constructed head circumference (HC) growth curves for Turkish children aged 0-2 years, finding minimal differences between LMS and quantile regression methods. HC percentiles for Turkish children showed slight variations compared to World Health Organization (WHO) standards.

Area of Science:

  • Pediatrics
  • Biostatistics
  • Child Development

Background:

  • Growth curves are essential for monitoring child growth and development.
  • Head circumference (HC) measurement is a key indicator of infant health and brain development.

Purpose of the Study:

  • To construct current head circumference (HC) growth curves and percentiles for 0-2-year-old Turkish children.
  • To compare different statistical methods for constructing HC growth curves by gender.
  • To compare the derived HC percentiles with existing standards.

Main Methods:

  • Retrospective analysis of 2832 children's HC measurements (2018-2021).
  • Construction of growth curves using Lambda-Mu-Sigma (LMS) and quantile regression (QR) methods.
  • Evaluation of model performance using the generalized Akaike information criterion.

Main Results:

  • Smoothed HC growth curves and percentile values were generated for boys and girls.
  • LMS and QR methods yielded very similar results for the third to 97th HC percentiles.
  • HC percentiles for Turkish children exhibited slight differences compared to World Health Organization (WHO) standards.

Conclusions:

  • The LMS and QR methods provide comparable results for constructing HC growth curves and percentiles.
  • Established HC percentiles for Turkish children may require updates or specific considerations compared to international standards.

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