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An assessment of hair cortisol among postpartum Brazilian mothers and infants from a high-risk community in São Paulo : intra-individual stability and association in mother-infant dyads

Liu, Cindy H. and Fink, Günther and Brentani, Helena and Brentani, Alexandra. (2017) An assessment of hair cortisol among postpartum Brazilian mothers and infants from a high-risk community in São Paulo : intra-individual stability and association in mother-infant dyads. Developmental psychobiology, 59 (7). pp. 916-926.

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Official URL: https://edoc.unibas.ch/63130/

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Abstract

This study examined maternal-infant synchrony of hair cortisol at 12 months after birth and the intra-individual stability of maternal hair cortisol in the postpartum period. Participants were selected from an ongoing São Paulo birth cohort project, where families are considered to be "high-risk" due to their chronic stress experiences, with the majority living in slums (favelas). Cortisol was collected through 3-cm segments of hair samples, with values representing approximate levels of cortisol from 9 to 12 months for mothers and children and 6 to 12 months for mothers. Maternal and infant cortisol values reflecting chronic stress 9-12 months after birth were highly correlated (r = .61, p < .001); earlier maternal cortisol levels (6-9 months) and child cortisol levels at 9-12 months (r = .51, p < .001) were also correlated. Maternal cortisol values showed stability over time (r = .79, p < .001). These maternal-infant correlations are high compared to the existing literature on hair cortisol in other mother-child dyads, suggesting stronger synchrony under high-risk contexts where families are faced with challenging circumstances.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Household Economics and Health Systems Research > Household Economy (Fink)
UniBasel Contributors:Fink, Günther
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley-Interscience Publ.
ISSN:1098-2302
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:02 Jul 2018 13:27
Deposited On:02 Jul 2018 13:27

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