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Title: Body fat in Singaporean infants: Development of body fat prediction equations in Asian newborns
Authors: Aris, I.M.
Soh, S.E. 
Tint, M.T.
Liang, S.
Chinnadurai, A.
Saw, S.M. 
Kwek, K.
Godfrey, K.M.
Gluckman, P.D.
Chong, Y.S.
Yap, F.K.P.
Lee, Y.S.
Keywords: Body composition
Neonatal fat mass
Prediction equation
Issue Date: Sep-2013
Publisher: Springer Nature
Citation: Aris, I.M., Soh, S.E., Tint, M.T., Liang, S., Chinnadurai, A., Saw, S.M., Kwek, K., Godfrey, K.M., Gluckman, P.D., Chong, Y.S., Yap, F.K.P., Lee, Y.S. (2013-09). Body fat in Singaporean infants: Development of body fat prediction equations in Asian newborns. European Journal of Clinical Nutrition 67 (9) : 922-927. ScholarBank@NUS Repository.
Abstract: Background/objectives: Prediction equations are commonly used to estimate body fat from anthropometric measurements, but are population specific. We aimed to establish and validate a body composition prediction formula for Asian newborns, and compared the performance of this formula with that of a published equation. Subjects/methods: Among 262 neonates (174 from day 0, 88 from days 1-3 post delivery) from a prospective cohort study, body composition was measured using air-displacement plethysmography (PEA POD), with standard anthropometric measurements, including triceps and subscapular skinfolds. Using fat mass measurement by PEA POD as a reference, stepwise linear regression was utilized to develop a prediction equation in a randomly selected subgroup of 62 infants measured on days 1-3, which was then validated in another subgroup of 200 infants measured on days 0-3. Results: Regression analyses revealed subscapular skinfolds, weight, gender and gestational age were significant predictors of neonatal fat mass, explaining 81.1% of the variance, but not triceps skinfold or ethnicity. By Bland-Altman analyses, our prediction equation revealed a non-significant bias with limits of agreement (LOA) similar to those of a published equation for infants measured on days 1-3 (95% LOA: (-0.25, 0.26) kg vs (-0.23, 0.21) kg) and on day 0 (95% LOA: (-0.19, 0.17) kg vs (-0.17, 0.18) kg). The published equation, however, exhibited a systematic bias in our sample. Conclusions: Our equation requires only one skinfold site measurement, which can significantly reduce time and effort. It does not require the input of ethnicity and, thus, aid its application to other Asian neonatal populations. © 2013 Macmillan Publishers Limited.
Source Title: European Journal of Clinical Nutrition
ISSN: 09543007
DOI: 10.1038/ejcn.2013.69
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