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Low birth weight does not predict the ontogeny of relative leg length of infants and children: An allometric analysis of the NHANES III sample
Author(s) -
Bogin Barry,
Baker Jack
Publication year - 2012
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.22064
Subject(s) - national health and nutrition examination survey , low birth weight , birth weight , allometry , demography , medicine , short stature , physiology , biology , pregnancy , pediatrics , environmental health , population , ecology , sociology , genetics
Abstract Previous research links both low birth weight (LBW) and relative leg length (RLL) to a similar set of adult pathologies, including type II diabetes, coronary vascular disease, and some cancers. Historically, LBW has been frequently used as a broad indicator of the quality of the intrauterine environment, while RLL has been considered a sensitive measure of childhood environmental quality. While these observations have been taken to suggest that these measures reflect independent exposures at different life‐stages, their mutual association with a similar set of later pathologies makes this assumption less certain than it may have previously seemed. Nationally representative data from the Third National Health and Nutrition Examination Survey (NHANES III) are used to test the hypothesis that LBW predicts reductions in the development of leg length relative to stature. After controls for important socioeconomic exposures that might confound measurement of such a relationship, we find statistical and biological evidence that variation in birth weight and variation in the development of leg length relative to stature (RLL) are independent. The results suggest that these two measures may represent independent information on prenatal and postnatal environmental quality. Am J Phys Anthropol 2012. © 2012 Wiley Periodicals, Inc.