Association of Early Interventions With Birth Outcomes and Child Linear Growth in Low-Income and Middle-Income Countries

JAMA Network Open
Q1
Jul 2019
Citations:25
Influential Citations:1
Systematic Reviews / Meta-Analyses
84
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Methods
LMIC-based randomized controlled trials (including cluster randomized trials) across three life periods: pregnancy (pregnant women), exclusive breastfeeding (0-6 months), and complementary feeding (6-24 months); 302,061 participants across 169 trials (205,867 pregnant women; 32,320 mother–infant dyads; 63,874 children aged 6–12 months); network meta-analysis using Bayesian random-effects models.
Intervention
Pregnant women: maternal multiple micronutrient (MMN) supplementation during pregnancy; Infants (0-6 months) receive MMN directly during exclusive breastfeeding; Children aged 6-24 months receive MMN supplementation.
Results
MMN supplementation during pregnancy reduced preterm birth risk (OR 0.54; 95%CrI 0.27–0.97) and increased mean birthweight by 0.08 kg; MMN given directly to infants during exclusive breastfeeding improved length-for-age z-score by 0.20 and height-for-age z-score by 0.14; MMN supplementation to children during 6–24 months showed growth benefits (LAZ/HAZ). Other micronutrient regimens showed mixed but often positive effects on birthweight and early growth; micronutrient/BBN regimens generally had greater probabilities of achieving clinically meaningful gains than non-micronutrient domains. Authors conclude that intervening early and using multi-domain nutrition interventions can improve birth outcomes and child growth in LMICs, and that combining interventions into practical packages warrants evaluation; more research is needed on maternal education, deworming, and WASH.
Limitations
Significant heterogeneity across interventions and life periods; limited long-term follow-up data across all life periods; not all interventions were studied across all periods (especially maternal education, deworming, and WASH); reliance on cluster-randomized trials and MCID-based probabilistic assessments may affect generalizability.

Abstract

Key Points Question Which interventions under the domains of nutrition, deworming, maternal education, and water, sanitation, and hygiene can improve birth and linear growth outcomes during the first 1000 days of life in low-income and middle-income ...