Evidence map›Paper›PMID 29877169›Full record

Trial reportPublic health nutrition2018

Effectiveness of zinc-fortified water on zinc intake, status and morbidity in Kenyan pre-school children: a randomised controlled trial.

Prosper Kujinga, Valeria Galetti, Elizabeth Onyango, Viktor Jakab, Simone Buerkli, Pauline Andang'o, Inge D Brouwer, Michael B Zimmermann, Diego Moretti

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Public health nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
0.9field-weighted citation impact, top 27% 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

9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 13 citations in OpenAlex.

  1. Zinc for prevention and treatment of the common cold.The Cochrane database of systematic reviews · 2024
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Review
  6. Review
  7. Article
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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 4 institutions in 3 countries.

Prosper Kujinga1Division of Human Nutrition,Wageningen University,PO Box 8129,EV Wageningen 6700,The Netherlands.
Valeria Galetti2Laboratory of Human Nutrition, Institute of Food,Nutrition and Health,ETH Zurich,Schmelzbergstrasse 7,Zurich 8092,Switzerland.
Elizabeth Onyango3School of Nursing, Midwifery and Paramedics,Masinde Muliro University of Science and Technology,Kakamega,Kenya.
Viktor Jakab2Laboratory of Human Nutrition, Institute of Food,Nutrition and Health,ETH Zurich,Schmelzbergstrasse 7,Zurich 8092,Switzerland.
Simone Buerkli2Laboratory of Human Nutrition, Institute of Food,Nutrition and Health,ETH Zurich,Schmelzbergstrasse 7,Zurich 8092,Switzerland.
Pauline Andang'o4School of Public Health and Community Development, Department of Nutrition,Maseno University,Maseno,Kenya.
Inge D Brouwer1Division of Human Nutrition,Wageningen University,PO Box 8129,EV Wageningen 6700,The Netherlands.
Michael B Zimmermann2Laboratory of Human Nutrition, Institute of Food,Nutrition and Health,ETH Zurich,Schmelzbergstrasse 7,Zurich 8092,Switzerland.
Diego Moretti2Laboratory of Human Nutrition, Institute of Food,Nutrition and Health,ETH Zurich,Schmelzbergstrasse 7,Zurich 8092,Switzerland.
ETH Zurich · CHWageningen University & Research · NLMaseno University · KEMasinde Muliro University of Science and Technology · KE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveZn deficiency and diarrhoea are prevalent and may coexist in children living in low-resource settings. Recently, a novel approach for delivering Zn via microbiologically treated, Zn-fortified water was shown to be effective in improving Zn status in West African schoolchildren. We assessed the effectiveness of Zn-fortified, microbiologically purified water delivered as a household intervention on Zn intake, status and morbidity in children aged 2-6 years from rural western Kenya.

designRandomised controlled trial. Intervention included households assigned to water treatment device with (ZFW) or without (FW) Zn delivery capability

settingRural households in Kisumu, western Kenya. SUBJECTS: Children aged 2-6 years.

resultsThe ZFW group had higher dietary Zn intake compared with the FW group. ZFW contributed 36 and 31 % of daily requirements for absorbable Zn in children aged 2-3 and 4-6 years, respectively, in the ZFW group. Consumption of Zn-fortified water resulted in lower prevalence of reported illness (risk ratio; 95 % CI) in the ZFW group compared with the FW group: for cold with runny nose (0·91; 0·83, 0·99; P=0·034) and abdominal pain (0·70; 0·56, 0·89; P=0·003) in the intention-to-treat analysis and for diarrhoea (0·72; 0·53, 0·96; P=0·025) in the per-protocol analysis. We did not detect an effect of treatment on plasma Zn concentration.

conclusionsDaily consumption of Zn-fortified, microbiologically treated water results in increased intake of absorbable dietary Zn and may help in preventing childhood infections in pre-school children in rural Africa.

Indexed as

Abdominal PainChildChild Nutritional Physiological PhenomenaChild, PreschoolCommon ColdDiarrheaDrinking WaterFemaleFood, FortifiedHumansIntention to Treat AnalysisKenyaMaleNutritional StatusPrevalenceRecommended Dietary AllowancesDrinking WaterTrace ElementsZincMorbidityPlasma zinc concentrationPre-school childrenWater fortificationZinc

Identifiers

PMID29877169
PMCPMC10260746
OpenAlexW2805329702

What OpenQuestion holds

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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.