ObjectivesThe objective of this paper was to review various nutritional interventions targeted at under-five children in countries that had suffered from natural disasters and to analyse their effect on nutrition-related outcomes.DesignSystematic review.SettingCountries that had suffered from natural disasters.ParticipantsChildren aged <5 years who were given any nutritional intervention to improve overall nutritional status after a natural disaster.Primary and secondary outcome measuresPrimary nutrition-related outcomes were stunting, wasting and underweight. The secondary nutrition-related outcome was anaemia.ResultsOf the 1218 studies that the reviewers agreed on, five matched the inclusion criteria and were included in this narrative synthesis. Four studies were longitudinal and one was cross-sectional in design. Food supplementation was an integral part of nutritional interventions in all the included studies. The most consistent nutritional outcome in all five included studies was reduced prevalence of wasting, followed by reduced prevalence of underweight in four, stunting in three and anaemia in one of the five included studies. The largest reduction in the prevalence of wasting and underweight was reported by the study in Sri Lanka. Overall, the quality of evidence ranged from moderate to weak.ConclusionsIntegrated nutrition interventions using locally available health resources yielded the best results. However, sound evidence on the most effective interventions is still lacking. Intervention studies with comparison groups are necessary to obtain more robust evidence on the effectiveness of nutrition interventions.
IntroductionMalnutrition among children is a serious public health problem in the aftermath of any natural disaster. We will review the various nutrition interventions for children aged <5 years in countries where natural disasters occurred and analyse the effect on nutrition-related outcomes.Methods and analysisWe will conduct a systematic review on nutrition intervention studies following natural disasters that were published between January 2000 and December 2015. Study selection will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The Cochrane Risk of Bias (RoB) tool will be used for randomised controlled trials and Risk of Bias Assessment for Non-Randomized Studies (RoBANS) will be used for non-randomised studies. The quality of evidence will be assessed using Grading of Recommendations Assessment, Development, and Evaluation (GRADE) guidelines. If sufficient data are available, we will conduct meta-analyses to establish the relationship between nutrition interventions and nutrition outcome indicators. All statistical analyses will be performed using Review Manager (Rev Man) V.5.3 for Windows. Heterogeneity of the data will be tested using the standard χ2 test. A fixed-effect model will be used for the studies with high heterogeneity (p value>0.10, I2≤50%). For dichotomous and continuous data, relative risk (RR) and mean difference with 95% CI will be used respectively. Subgroup analysis will be performed for studies with low heterogeneity (p value ≤0.10). We will use Z score with the level of significance set at p value <0.05 to test the total effect. Funnel plots will be used to detect publication bias.Ethics and disseminationAs primary data will not be collected, formal ethical approval will not be required. The results will be disseminated by publication in peer-reviewed journals, conference presentations and the media.Registration detailsInternational Prospective Register for Systematic Reviews (PROSPERO) number CRD42015023243 was registered on 1 June 2015.
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