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Type: Journal article
Title: Growth patterns during the first 12 months of life: post-hoc analysis of South Australian Aboriginal and Caucasian infant data taken from a randomised controlled trial of formula feeding
Author: Hawke, K.
Louise, J.
Collins, C.
Zhou, S.J.
Brown, A.
Gibson, R.A.
Makrides, M.
Citation: Asia Pacific Journal of Clinical Nutrition, 2017; 26(3):464-470
Publisher: HEC Press
Issue Date: 2017
ISSN: 0964-7058
Statement of
Karen Hawke, Jennie Louise, Carmel Collins, Shao J Zhou, Alex Brown, Robert Gibson, Maria Makrides
Abstract: Background and Objectives: To compare growth characteristics of Aboriginal and Caucasian formula-fed infants in the first 12 months of life. Methods and Study Design: We conducted post-hoc data analysis of infants who were part of a previous randomised controlled trial comparing infants randomly assigned to cow or goat milk-based infant formulae. Weight, height, and body composition were assessed at serial time points between study entry (~1-2 weeks of age) and 12 months. There was no growth difference between the randomised groups so the two groups were combined and the data were used to conduct a non-randomised comparison of the growth between Aboriginal (n=11) and Caucasian formula-fed (n=169) infants. Results: Aboriginal formula-fed infants had significantly higher mean z-scores for weight (0.65 difference, [95% CI 0.11, 1.18], p=0.018) and weight-for-length (0.82 difference [95% CI 0.20, 1.44], p=0.010) at 2 months, and all time points onward compared with Caucasian formula-fed infants. Mean length z-scores and the overall growth trajectory across time did not differ between Aboriginal and Caucasian formula-fed infants. Concordant with the weight and weight-for-length z-scores, Aboriginal infants had increased fat mass at 2 months (292 g difference [95% CI 56, 528], p=0.015), and all time points onward compared to Caucasian infants. There was no difference in fat free mass. Conclusions: Though there was only a small number of Aboriginal infants for comparison, our data indicate Aboriginal formula- fed infants were heavier and had a larger increase in fat mass over time compared with Caucasian formula-fed infants. Further studies using a larger cohort are needed to substantiate these findings.
Keywords: Infants; growth; Aboriginal; body composition; fat mass
Rights: © 2017 HEC Press
DOI: 10.6133/apjcn.042016.09
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