Evidence map›Paper›PMID 26817503›Full record

Trial reportThe American journal of clinical nutrition2016

Effect of zinc and multivitamin supplementation on the growth of Tanzanian children aged 6-84 wk: a randomized, placebo-controlled, double-blind trial.

Lindsey M Locks, Karim P Manji, Christine M McDonald, Roland Kupka, Rodrick Kisenge, Said Aboud, Molin Wang, Wafaie W Fawzi, Christopher P Duggan

Registry-linked trialOpen access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The American journal of clinical nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00421668 (A Trial of Zinc and Micronutrients in Tanzanian Children), which is not on this map. Cited by 22 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 5 pooled it
5.0field-weighted citation impact, top 5% 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.

NCT00421668 phase3completednot on this map

A Trial of Zinc and Micronutrients in Tanzanian Children

TypeinterventionalSponsorHarvard School of Public Health (HSPH)Ran2007 to 2012Enrolled2,400ConditionsDiarrheal Illnesses, Respiratory Illness, Growth FalteringArmsZinc, Multivitamins, Placebo
3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 5 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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  17. Maternal Employment Status and Minimum Meal Frequency in Children 6-23 Months in Tanzania.International journal of environmental research and public health · 2019
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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

9 authors at 5 institutions in 2 countries.

Lindsey M LocksDepartments of Nutrition.ORCID http://orcid.org/0000-0002-0019-9545
Karim P ManjiDepartments of Pediatrics and.
Christine M McDonaldDivision of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA; and.
Roland KupkaDepartments of Nutrition, UNICEF Headquarters, New York, NY.
Rodrick KisengeDepartments of Pediatrics and.
Said AboudMicrobiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania;
Molin WangBiostatistics.
Wafaie W FawziDepartments of Nutrition, Epidemiology, and Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA;
Christopher P DugganDepartments of Nutrition, Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA; Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA; and christopher.duggan@childrens.harvard.edu.
Boston Children's Hospital · USCancer Research And Biostatistics · USHarvard Global Health Institute · USMuhimbili University of Health and Allied Sciences · TZUnited Nations Children's Fund · US

Funding

STRUCTURE-FUNCTION RELATIONSHIPS IN THE ALIMENTARY TRACTP30DK034854 · NIDDK · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI LYNN BRY · 1986 to 2026
$32.4M
ROLE OF DIETARY CONSTITUENTS ON GENE EXPRESSION IN INTESTINAL EPITHELIUMP30DK040561 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI CHRISTOPHER P DUGGAN · 1994 to 2026
$31.6M
A Trial of Zinc and Micronutrients in Tanzanian ChildrenR01HD048969 · NICHD · HARVARD SCHOOL OF PUBLIC HEALTH · PI DUGGAN, CHRISTOPHER P · 2006 to 2010
$2.0M
Patient-oriented Research in Pediatric Diarrheal DiseasesK24DK104676 · NIDDK · BOSTON CHILDREN'S HOSPITAL · PI DUGGAN, CHRISTOPHER P · 2015 to 2019
$903k
NICHD NIH HHS R01 HD048969NICHD NIH HHS R01 HD048969-01NIDDK NIH HHS K24 DK104676NIDDK NIH HHS P30 DK034854NIDDK NIH HHS P30 DK040561
6 · The paper itself

Abstract

backgroundPoor child growth increases risks of mortality and morbidity. Micronutrient supplements have the potential to improve child growth.

objectiveWe assessed the effect of daily zinc, multivitamin (vitamins C, E, and B-complex), and zinc and multivitamin (Zn+MV) supplementation on growth in infants in Tanzania.

designIn this randomized, 2 × 2 factorial, double-blind trial, 2400 infants were randomly assigned to receive zinc, multivitamins, Zn+MVs, or a placebo at 6 wk of age and were followed up for 18 mo with monthly growth measurements. Mixed-effects models with restricted cubic splines for the mean change in anthropometric z scores were fit for each group. Likelihood ratio tests were used to compare the effect of supplements on growth trajectories. Cox proportional hazards models were used to compare incidences of stunting, wasting, and underweight.

resultsChildren in all groups experienced growth faltering. At 19 mo of age, prevalences of stunting, wasting, and underweight were 19.8%, 6.0%, and 10.8%, respectively. Changes in weight-for-age z scores (WAZs) and weight-for-height z scores (WHZs) were significantly different across the 4 groups (P < 0.001 for both). The mean ± SE decline in the WAZ from baseline to the end of follow-up in the Zn+MV group was significantly less than in the placebo group (-0.36 ± 0.04 compared with -0.50 ± 0.04; P = 0.020), whereas the decline in the WHZ was significantly greater in the zinc-only group than in the placebo group (-0.57 ± 0.07 compared with -0.35 ± 0.07; P = 0.021). Supplements did not have a significant effect on mean change in the height-for-age z score or on rates of stunting, wasting, or underweight.

conclusionsAlthough there were small but significant improvements in the WAZ in the Zn+MV group, daily zinc supplementation alone, multivitamin supplementation alone, and the combined Zn+MV did not reduce the incidences of underweight, stunting, or wasting in Tanzanian infants. Alternative approaches to prevent growth faltering should be pursued. This trial was registered at clinicaltrials.gov as NCT00421668.

Indexed as

Dietary SupplementsAdultBody HeightBody WeightChildChild, PreschoolDouble-Blind MethodFemaleGrowthGrowth DisordersHumansMalePregnancyTanzaniaThinnessTrace ElementsTrace ElementsVitaminsZincgrowthinfancymultiple micronutrientssupplementationzinc

Identifiers

PMID26817503
PMCPMC4763494
OpenAlexW2292265951

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.