Evidence map›Paper›PMID 29018583›Full record

ArticleBMJ global health2017

Effects of nutrition interventions during pregnancy on low birth weight: an overview of systematic reviews.

Katharina da Silva Lopes, Erika Ota, Prakash Shakya, Amarjargal Dagvadorj, Olukunmi Omobolanle Balogun, Juan Pablo Peña-Rosas, Luz Maria De-Regil, Rintaro Mori

Open access · goldAbstract read
In one paragraph

Article in BMJ global health, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 8 pooled it
18.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

72 citing papers in PubMed, 8 syntheses or guidelines pooled it, 142 citations in OpenAlex.

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12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 5 countries.

Katharina da Silva LopesGlobal Health Nursing, Graduate School of Nursing Science, St. Luke's International University, Tokyo, Japan.ORCID 0000-0003-1625-135X
Erika OtaGlobal Health Nursing, Graduate School of Nursing Science, St. Luke's International University, Tokyo, Japan.
Prakash ShakyaFaculty of Social Sciences, Kyorin University, Tokyo, Japan.
Amarjargal DagvadorjDepartment of Health Policy, National Center for Child Health and Development, Tokyo, Japan.
Olukunmi Omobolanle BalogunDepartment of Health Policy, National Center for Child Health and Development, Tokyo, Japan.
Juan Pablo Peña-RosasEvidence and Programme Guidance, Department of Nutrition for Health and Development, World Health Organization (WHO), Geneva, Switzerland.
Luz Maria De-RegilNutrition International, Research and Evaluation, Ottawa, Canada.
Rintaro MoriDepartment of Health Policy, National Center for Child Health and Development, Tokyo, Japan.
National Center For Child Health and Development · JPSt. Luke's International University · JPKyorin University · JPNutrition International · CAWorld Health Organization - Pakistan · PK

Funding

World Health Organization 001
6 · The paper itself

Abstract

introductionLow birth weight (LBW, birth weight less than 2500 g) is associated with infant mortality and childhood morbidity. Poor maternal nutritional status is one of several contributing factors to LBW. We systematically reviewed the evidence for nutrition-specific (addressing the immediate determinants of nutrition) and nutrition-sensitive (addressing the underlying cause of undernutrition) interventions to reduce the risk of LBW and/or its components: preterm birth (PTB) and small-for-gestational age (SGA).

methodsWe conducted a comprehensive literature search in MEDLINE, EMBASE, CINAHL and the Cochrane Database of Systematic Reviews (September 2015). Systematic reviews of randomised controlled trials focusing on nutritional interventions before and during pregnancy to reduce LBW and its components were eligible for inclusion into the overview review. We assessed the methodological quality of the included reviews using

resultsWe included 23 systematic reviews which comprised 34 comparisons. Sixteen reviews were of high methodological quality, six of moderate and only one review of low quality. Six interventions were associated with a decreased risk of LBW: oral supplementation with (1) vitamin A, (2) low-dose calcium, (3) zinc, (4) multiple micronutrients (MMN), nutritional education and provision of preventive antimalarials. MMN and balanced protein/energy supplementation had a positive effect on SGA, while high protein supplementation increased the risk of SGA. High-dose calcium, zinc or long-chain n-3 fatty acid supplementation and nutritional education decreased the risk of PTB.

conclusionImproving women's nutritional status positively affected LBW, SGA and PTB. Based on current evidence, especially MMN supplementation and preventive antimalarial drugs during pregnancy may be considered for policy and practice. However, for most interventions evidence was derived from a small number of trials and/or participants. There is a need to further explore the evidence of nutrition-specific and nutrition-sensitive interventions in order to reach the WHO's goal of a 30% reduction in the global rate of LBW by 2025.

Indexed as

child healthlow birthweightnutritionpregnancypreterm birthsmall-for-gestational age

Identifiers

PMID29018583
PMCPMC5623264
OpenAlexW2757230501

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.