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Birth month associations with height, head circumference, and limb lengths among peruvian children

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dc.contributor.author Pomeroy, E.
dc.contributor.author Wells, J.C.K.
dc.contributor.author Stanojevic, S.
dc.contributor.author Miranda, J.J.
dc.contributor.author Cole, T.J.
dc.contributor.author Stock, J.T.
dc.date.accessioned 2020-06-10T18:11:33Z
dc.date.available 2020-06-10T18:11:33Z
dc.date.issued 2014
dc.identifier.uri https://hdl.handle.net/20.500.12866/7989
dc.description.abstract Associations between season of birth and body size, morbidity, and mortality have been widely documented, but it is unclear whether different parts of the body are differentially sensitive, and if such effects persist through childhood. This may be relevant to understanding the relationship between early life environment and body size and proportions. We investigated associations between birth month and anthropometry among rural highland (n = 162) and urban lowland (n = 184) Peruvian children aged 6 months to 8 years. Stature; head-trunk height; total limb, ulna, tibia, hand, and foot lengths; head circumference; and limb measurements relative to head-trunk height were converted to internal age-sex-specific z scores. Lowland and highland datasets were then analyzed separately for birth month trends using cosinor analysis, as urban conditions likely provide a more consistent environment compared with anticipated seasonal variation in the rural highlands. Among highland children birth month associations were significant most strongly for tibia length, followed by total lower limb length and stature, with a peak among November births. Results were not significant for other measurements or among lowland children. The results suggest a prenatal or early postnatal environmental effect on growth that is more marked in limb lengths than trunk length or head size, and persists across the age range studied. We suggest that the results may reflect seasonal variation in maternal nutrition in the rural highlands, but other hypotheses such as variation in maternal vitamin D levels cannot be excluded. en_US
dc.language.iso eng
dc.publisher Wiley
dc.relation.ispartof urn:issn:1096-8644
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject anthropology en_US
dc.subject anthropometry en_US
dc.subject Anthropometry en_US
dc.subject article en_US
dc.subject birth season en_US
dc.subject body height en_US
dc.subject Body Height en_US
dc.subject body proportions en_US
dc.subject body size en_US
dc.subject Body Size en_US
dc.subject cephalometry en_US
dc.subject Cephalometry en_US
dc.subject Child en_US
dc.subject Child, Preschool en_US
dc.subject developing country en_US
dc.subject environmental exposure en_US
dc.subject environmental stress en_US
dc.subject female en_US
dc.subject foot length en_US
dc.subject hand length en_US
dc.subject head circumference en_US
dc.subject human en_US
dc.subject Humans en_US
dc.subject infant en_US
dc.subject Infant en_US
dc.subject major clinical study en_US
dc.subject male en_US
dc.subject maternal nutrition en_US
dc.subject musculoskeletal system parameters en_US
dc.subject personal experience en_US
dc.subject Peru en_US
dc.subject seasonal variation en_US
dc.subject Seasons en_US
dc.subject stature en_US
dc.subject tibia length en_US
dc.subject total lower limb length en_US
dc.subject total upper limb length en_US
dc.subject ulna length en_US
dc.subject vitamin D en_US
dc.title Birth month associations with height, head circumference, and limb lengths among peruvian children en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1002/ajpa.22484


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