Polish 2012 growth references for preschool children
Related Experiment Video
Updated: May 14, 2026

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
Published on: July 18, 2020
Zbigniew Kułaga1, Aneta Grajda, Beata Gurzkowska
1Public Health Department, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland. z.kulaga@czd.pl
Insights
New growth references for Polish preschool children show differences compared to WHO standards. Polish children tend to be taller and heavier than WHO references suggest, indicating a need for updated national guidelines.
Area of Science:
- Pediatrics
- Anthropometry
- Public Health
Background:
- Child growth monitoring is crucial for healthcare.
- Existing growth references may not accurately reflect current Polish preschool children's stature.
- International standards like WHO and German references require comparison with local data.
Purpose of the Study:
- To establish updated, population-representative growth references for Polish preschool children (ages 3-6).
- To compare these new references with World Health Organization (WHO) growth standards and German references.
- To assess Polish children's growth patterns against international benchmarks.
Main Methods:
- Utilized the LMS method for constructing height-, weight-, BMI-for-age, and weight-for-height references.
- Employed data from the OLA study, a large, population-representative sample of 4,941 Polish children aged 3-6 years.
- Performed statistical comparisons between new Polish references and existing WHO/German references.
Main Results:
- New Polish and German height references for boys showed near-complete overlap, while WHO percentiles were lower.
- Polish and German height references for girls aligned at the 3rd and 50th percentiles; WHO references indicated shorter stature.
- Polish preschool children exhibited significantly higher mean z-scores for height, weight, and BMI relative to WHO standards.
- The prevalence of children below -2 SD for height-for-age was lower, and above +2 SD was higher than expected compared to WHO standards.
Conclusions:
- The OLA study provides robust, updated growth references for Polish preschool children.
- These new references are recommended for national use in Poland.
- Findings highlight significant divergence of Polish children's growth from WHO standards, necessitating localized reference data.
Unlabelled:
Growth references are useful in monitoring a child's growth, which is an essential part of child care. The aim of this paper is to provide updated growth references for Polish preschool children and to assess how well children in Poland match or diverge from the World Health Organization (WHO) growth standards/references and recent German height-for-age references. The height-, weight-, body mass index-for-age, and weight-for-height references were constructed with the LMS method using data from a recent, large, population-representative sample of 4,941 preschool children aged 3 to 6 years (the OLA study). In the case of boys, the third, 50th, and 97th height percentiles of new Polish and German references overlap almost completely, whereas the WHO growth standards/references percentiles are systematically lower. In the case of girls, comparison between the new Polish and German height references showed conformity on the third and 50th percentile, whereas body height values of the WHO standards/references are shorter. Polish children aged 3 to 6 years from for the nation representative sample, had significantly greater than zero mean z scores of height-, weight-, and BMI-for-age and weight-for-height, relative to the WHO growth standards/references. The number of children in the sample with height-for-age below -2 SD was significantly lower than expected and number of children with height-for-age above +2 SD was significantly higher than expected.
Conclusion:
The OLA study growth references can be recommended as national references for preschool children in Poland.
Related Concept Videos
Population Growth
Piaget's Stage 2 of Cognitive Development
Piaget's Stage 1 of Cognitive Development
Exploration...
Exponential Equations for Modeling Growth
Piaget's Stage 3 of Cognitive Development
Conservation and Constancy of Quantity
A significant cognitive milestone in the concrete...
Introduction to Developmental Psychology
