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Clin Nutr. 2011 Oct;30(5):634-9. doi: 10.1016/j.clnu.2011.03.010. Epub 2011 Apr 27.

Body mass index and weight-for-length ratio references for infants born at 33-42 weeks gestation: a new tool for anthropometric assessment.

Author information

1
Department of Neonatology, Helen Schneider Hospital for Women, Rabin Medical Center, Beilinson Campus, Petach Tikva 49 100, Israel. shmueld@clalit.org.il

Abstract

BACKGROUND & AIMS:

The risk of childhood obesity, an increasingly prevalent problem worldwide, might be predictable by early body mass index measurements. This study sought to develop body mass index and weight-for-length ratio references for infants born at 33-42 weeks gestation and to validate these data against the growth curves of the World Health Organization Multicenter Growth Reference Study.

METHODS:

Data were collected from the Neonatal Registry of Rabin Medical Center for all healthy singleton babies born live at 33-42 weeks gestation. Crude and smoothed reference tables and graphs for body mass index and weight-for-length ratio by gestational age were created for males and females, separately.

RESULTS:

Birth weight, length, and body mass index percentiles for full-term neonates were similar to the World Health Organization study, reinforcing the generalizability of our reference charts for infants born at 33-42 weeks. Cutoff values for small for date (<5th, <10th percentile) and large for date (>85th, >95th percentile) infants differed across gestational ages in both pre-term and full-term infants.

CONCLUSIONS:

As body proportionality indexes provide an assessment of body mass and fatness relative to length, we suggest that BMI and Wt/L ratio percentiles be added to weight and length growth curves as a routine intrauterine growth assessment at birth.

PMID:
21524833
DOI:
10.1016/j.clnu.2011.03.010
[Indexed for MEDLINE]

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