Risk of childhood undernutrition related to small-for-gestational age and preterm birth in low- and middle-income countries

P. Christian, S.E. Lee, A.M. Donahue, L.S. Adair, S.E. Arifeen, P. Ashorn, F.C. Barros, C.H. Fall, W.W. Fawzi, W. Hao, G. Hu, J.H. Humphrey, L. Huybregts, C.V. Joglekar, S.K. Kariuki, P. Kolsteren, G.V. Krishnaveni, E. Liu, R. Martorell, D. OsrinL.A. Persson, U. Ramakrishnan, L. Richter, D. Roberfroid, A. Sania, F.O. ter Kuile, J. Tielsch, C.G. Victora, C.S. Yajnik, H. Yan, L. Zeng, R.E. Black

    Research output: Contribution to journalA1: Web of Science-article

    Abstract

    BACKGROUND: Low- and middle-income countries continue to experience a large burden of stunting; 148 million children were estimated to be stunted, around 30-40% of all children in 2011. In many of these countries, foetal growth restriction (FGR) is common, as is subsequent growth faltering in the first 2 years. Although there is agreement that stunting involves both prenatal and postnatal growth failure, the extent to which FGR contributes to stunting and other indicators of nutritional status is uncertain. METHODS: Using extant longitudinal birth cohorts (n = 19) with data on birthweight, gestational age and child anthropometry (12-60 months), we estimated study-specific and pooled risk estimates of stunting, wasting and underweight by small-for-gestational age (SGA) and preterm birth. RESULTS: We grouped children according to four combinations of SGA and gestational age: adequate size-for-gestational age (AGA) and preterm; SGA and term; SGA and preterm; and AGA and term (the reference group). Relative to AGA and term, the OR (95% confidence interval) for stunting associated with AGA and preterm, SGA and term, and SGA and preterm was 1.93 (1.71, 2.18), 2.43 (2.22, 2.66) and 4.51 (3.42, 5.93), respectively. A similar magnitude of risk was also observed for wasting and underweight. Low birthweight was associated with 2.5-3.5-fold higher odds of wasting, stunting and underweight. The population attributable risk for overall SGA for outcomes of childhood stunting and wasting was 20% and 30%, respectively. CONCLUSIONS: This analysis estimates that childhood undernutrition may have its origins in the foetal period, suggesting a need to intervene early, ideally during pregnancy, with interventions known to reduce FGR and preterm birth.
    Original languageEnglish
    JournalInternational Journal of Epidemiology
    Volume42
    Issue number5
    Pages (from-to)1340-1355
    Number of pages16
    ISSN0300-5771
    DOIs
    Publication statusPublished - 2013

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