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Recovery from stunting and cognitive outcomes in young children: evidence from the South African Birth to Twenty Cohort Study

Part of: Advancing the DOHaD Agenda in Africa 9th World Congress: Cape Town

Published online by Cambridge University Press:  24 September 2015

D. Casale  and
C. Desmond
D. Casale*
Affiliation:
School of Economic and Business Sciences, University of the Witwatersrand, Johannesburg, South Africa
C. Desmond
Affiliation:
Human and Social Development, Human Sciences Research Council, Durban, South Africa Development Pathways to Health Research Unit, University of the Witwatersrand, Johannesburg, South Africa
*
*Address for correspondence: D. Casale, School of Economic and Business Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa. (Email [email protected])
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Abstract

In this study we analyse the implications for cognitive function of recovery from stunting in early childhood. More specifically, we test whether children who met the definition for stunted at age 2, but not at age 5, perform better in cognitive tests than children who remain stunted over this period. The sample is drawn from the Birth to Twenty Cohort Study, a prospective data set of children born in 1990 in urban South Africa. The measure of cognitive function that we use is based on the Revised Denver Prescreening Developmental Questionnaire implemented when the children were age 5. We employ multivariate regression in the analysis to control for child-specific characteristics, socio-economic status, the home environment and caregiver inputs. We find that recovery from stunting is not uncommon among young children in our sample. However, children who recover from stunting by age 5 still perform significantly worse on cognitive tests than children who do not experience early malnutrition, and almost as poorly as children who remain stunted. These findings suggest that the timing of nutritional inputs in the early years is key in a child’s cognitive development, with implications for school readiness and achievement.

Keywords

birth cohortpre-school cognitive functionrecovery from stuntingSouth Africa
Type
Original Article
Information
Journal of Developmental Origins of Health and Disease , Volume 7 , Issue 2: Themed Issue: Developmental Origins of Health and Disease: Importance of research for Africa , April 2016 , pp. 163 - 171
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Copyright
© Cambridge University Press and the International Society for Developmental Origins of Health and Disease 2015 

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