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Updated: May 9, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Anthropometric protocols for the construction of new international fetal and newborn growth standards: the
L Cheikh Ismail1, H E Knight, Z Bhutta
1Nuffield Department of Obstetrics & Gynaecology, and Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, UK.
Insights
The INTERGROWTH-21st Project established new fetal and preterm infant growth standards. Standardized anthropometric protocols ensured high-quality data for optimal international growth indicators.
Area of Science:
- Pediatrics
- Human Growth and Development
- Anthropometry
Background:
- Optimal fetal and preterm infant growth requires accurate, standardized measurement tools.
- Existing growth charts may not reflect diverse international populations.
- The INTERGROWTH-21st Project addresses the need for updated, prescriptive growth standards.
Purpose of the Study:
- To detail the rigorous methodology for constructing new fetal and preterm infant growth standards.
- To ensure the validity and reliability of anthropometric data collected across multiple international sites.
- To establish a foundation for optimal fetal and postnatal growth assessment.
Main Methods:
- Selection and training of anthropometric personnel across international study sites.
- Standardization of anthropometric equipment and measurement techniques.
- Detailed description of calibration protocols for all measurements.
Main Results:
- Implementation of standardized protocols ensured high-quality anthropometric data.
- Consistent measurement techniques were applied across all participating centers.
- The methodology provides a robust framework for international growth standard development.
Conclusions:
- Standardized anthropometric protocols are critical for valid international growth standards.
- The INTERGROWTH-21st Project's methodology ensures data quality for optimal growth assessment.
- These standards will improve the evaluation of fetal and preterm infant growth globally.
Abstract:
The primary aim of the INTERGROWTH-21(st) Project is to construct new, prescriptive standards describing optimal fetal and preterm postnatal growth. The anthropometric measurements include the head circumference, recumbent length and weight of the infants, and the stature and weight of the parents. In such a large, international, multicentre project, it is critical that all study sites follow standardised protocols to ensure maximal validity of the growth and nutrition indicators used. This paper describes, in detail, the selection of anthropometric personnel, equipment, and measurement and calibration protocols used to construct the new standards. Implementing these protocols at each study site ensures that the anthropometric data are of the highest quality to construct the international standards.
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