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The INTERGROWTH-21(st) Project has in its mandate to develop prescriptive standards for fetal, neonatal and preterm post-neonatal growth. The project comprises three components: the Fetal Growth Longitudinal Study (FGLS), the Preterm Postnatal Follow-up Study (PPFS), and the Newborn Cross-Sectional Study (NCSS). We consider here the statistical aspects of the three components as they relate to the construction of these standards, in particular the sample size, and outline the principles that will guide the planned main analyses.

Original publication

DOI

10.1111/1471-0528.12031

Type

Journal article

Journal

BJOG : an international journal of obstetrics and gynaecology

Publication Date

09/2013

Volume

120 Suppl 2

Pages

71 - v

Addresses

Centre for Statistics in Medicine, Wolfson College Annexe, University of Oxford, Oxford, UK.

Keywords

International Fetal and Newborn Growth Consortium for the 21st Century, Humans, Ultrasonography, Prenatal, Body Weights and Measures, Clinical Protocols, Data Interpretation, Statistical, Models, Statistical, Longitudinal Studies, Cross-Sectional Studies, Sample Size, Child Development, Fetal Development, Research Design, Infant, Infant, Newborn, Multicenter Studies as Topic, Growth Charts