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Updated: Aug 13, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
[Postnatal growth of very low birth weight infants. Anthropometry at two year of age: a longitudinal study]
Przemko Kwinta1, Edyta Piatkowska, Małgorzata Klimek
1Klinika Chorób Dzieci Katedry Pediatrii Wydziału Lekarskiego Uniwersytetu Jagiellońsklego, 30-663 Kraków, ul. Wielicka 265. kwintap@mp.pl
Insights
Premature newborns born later (29-32 weeks gestation) show faster growth rates than extremely premature infants (24-28 weeks gestation). Separate growth charts are crucial for assessing development in these vulnerable populations.
Area of Science:
- Neonatalogy
- Pediatric Growth and Development
- Perinatology
Context:
- Accurate growth assessment is vital for premature newborns' health.
- Newborn maturity significantly influences growth trajectories.
- Extremely premature infants require specialized monitoring.
Purpose:
- To evaluate how newborn maturity impacts growth rates during the first two years of life.
- To compare growth patterns between different gestational age groups of premature infants.
Summary:
- A prospective, longitudinal study followed 159 premature newborns (< or = 32 weeks gestation).
- Infants born between 29-32 weeks gestation exhibited significantly faster growth in weight, length, and chest circumference compared to those born between 24-28 weeks.
- Growth charts stratified by gestational age are recommended for precise developmental assessment.
Impact:
- Highlights the importance of gestational age-specific growth charts for premature infants.
- Provides evidence for differentiated growth monitoring strategies based on maturity.
- Informs clinical practice for optimizing care and developmental follow-up of premature newborns.
Background:
The growth rate is an important indicator of the child's health state. Premature newborns require an especially exact and reliable assessment of their growth which should include, above all, their maturity.
Aim:
The evaluation of the influence of newborn's maturity on its growth rate during 2 first years of life.
Material And Methods:
Prospective, longitudinal cohort study. 159 newborns born < or = 32 weeks of gestation discharged from 3rd level NICU were divided into 2 cohorts: A) born between 24-28 weeks (n = 83) and B) born between 29-32 weeks (n = 76). Before discharge and then every month in the 1st year of life and every 3 months in the 2nd year of life weight, length, head circumference and chest circumference were measured.
Results:
Median length in 6th month was 622 mm in group A and 650 mm in group B (p < 0.05), after 1 year 720 mm vs 745 mm (p < 0.05), and after 2 years 819 mm vs 853 mm (p < 0.05). Median weight was 6010 vs 7160 g (p < 0.05), 8210 vs 9410 g and 9965 vs 11,260 g (p < 0.05), median chest circumference 40 vs 42 cm (p < 0.05), 44 vs 46 cm (p < 0.05) and 46 vs 47.5 cm (p < 0.05) and median head circumference 42 vs 43 cm (p < 0.05), 45 vs 46 cm (p < 0.05) i 47 vs 48 cm (p = 0.06). The results were also presented as growth charts.
Conclusions:
The newborns born between 29-32 week of gestation have faster growth rate than newborns born between 24-28 week of gestation. The assessment of development of extremely premature newborns should be based on growth charts prepared separately for a given gestational age.
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