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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort

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Author(s):
Grandi, Carlos [1] ; Rodrigues, Livia Dos S. [2] ; Aragon, Davi C. [2] ; Carmona, Fabio [2] ; Cardoso, Viviane C. [2]
Total Authors: 5
Affiliation:
[1] Argentine Soc Pediat, Res Dept, Buenos Aires, DF - Argentina
[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Puericultura & Pediat, Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Jornal de Pediatria; v. 97, n. 6, p. 610-616, 2021.
Web of Science Citations: 1
Abstract

Objectives: The objective was to calculate weight/length (W/L) ratio values and percentiles by sex and gestational age (GA) to estimate fat mass (FM), fat-free mass (FFM) and body fat percentage (BF%) as welt as to compare these indices in preterm, small (SGA), and large (LGA) for GA, stunted and wasted infants from a Brazilian cohort of newborns, comparing with the INTERGROWTH-21st. Methods: Secondary, cross-sectional analysis of data obtained of 7427 live-born infants from the BRISA Cohort Study in the city of Ribeirao Preto, SP, Brazil in 2010. For body composition estimation, W/L ratio was used in multiple regression models. The 3rd, 50th, and 97th percentiles for W/L ratio and body composition measures (FM, FFM, and BF%) were calculated using fractional polynomial regression models. Results: Average W/L ratio was 6.50 kg/m (SD 0.87), while for FM, BF%, and FFM the corresponding values were 359.64 g (145.76), 10.90% (3.05) and 2798.84 g (414.84), respectively. SGA (< 3rd percentile), and wasted infants showed the lowest W/L ratios and measures of body composition. The 3rd, 50th, and 97th percentiles charts of W/L, FM, BF%, and FFM by GA and sex are presented. Conclusions: W/L ratio values of the RP-BRISA Cohort are higher than IG-21st. SGA (< 3rd) and wasted infants showed the lowest W/L ratio and measures of body composition. The body composition references presented here could be used to refine the nutritional assessment of Brazilian newborns and to facilitate comparisons across populations. (C) 2021 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. (AU)

FAPESP's process: 08/53593-0 - Etiological factors of preterm birth and consequences of perinatal factors in child health: birth cohorts in two Brazilian cities (BRISA project)
Grantee:Marco Antonio Barbieri
Support Opportunities: Research Projects - Thematic Grants