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Growth Velocity of Infants From Birth to 5 Years Born in Maku, Iran

Seyed Mohammad Taghi Ayatollahi, Elham Haem1, Zahra Sharafi

  • 1Shiraz University of Medical Sciences school of Medicine. elhamhaem@gmail.com.

Global Journal of Health Science
|September 19, 2015
PubMed

Insights

This study developed growth velocity charts for infant weight, height, and head circumference in Iran. Findings show rapid initial growth velocity, stabilizing by age two, with boys exhibiting higher velocity in the first year.

Area of Science:

  • Pediatrics
  • Growth Monitoring
  • Biostatistics

Background:

  • Accurate growth velocity standards are crucial for assessing child development.
  • Existing growth velocity data, particularly from Iran, is limited.
  • This study aimed to create essential growth velocity charts for infants.

Purpose of the Study:

  • To construct weight, height, and head circumference growth velocity charts for infants.
  • To provide reference data for monitoring infant growth in Northwest Iran.
  • To analyze sex-based differences in infant growth velocity.

Main Methods:

  • Longitudinal study of 256 infants (124 boys, 132 girls) in Maku, Iran, from birth to 5 years.
  • Regular measurements of weight and height, with head circumference measured up to 1.5 years.
  • Application of the LMS (Lambda, Mu, Sigma) method using specialized software to generate growth velocity centiles.

Main Results:

  • Generated 5th, 50th, and 95th percentile growth velocity charts for weight, height, and head circumference.
  • Observed a rapid decrease in growth velocity from birth to 2 years, followed by stabilization until 5 years.
  • Boys showed higher growth velocity than girls during the first year, with velocities becoming comparable by 12 months and remaining similar thereafter.

Conclusions:

  • Highlights the scarcity of growth velocity studies in Iran.
  • Emphasizes the value of using longitudinal data for establishing growth velocity centiles.
  • Provides a basis for comparing infant growth velocities with international data, such as from the UK.
Abstract

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