Evidence map›Paper›PMID 26404337›Full record

Trial reportInternational journal of environmental research and public health2015

The Effect of Improved Water Supply on Diarrhea Prevalence of Children under Five in the Volta Region of Ghana: A Cluster-Randomized Controlled Trial.

Seungman Cha, Douk Kang, Benedict Tuffuor, Gyuhong Lee, Jungmyung Cho, Jihye Chung, Myongjin Kim, Hoonsang Lee, Jaeeun Lee, Chunghyeon Oh

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in International journal of environmental research and public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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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

10 authors.

Seungman ChaKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. jesuscha@koica.go.kr.
Douk KangWorld Vision Korea, 77-1, Yeouinaru-ro, Yeongdeungpo-gu, Seoul, 07327, Republic of Korea. douk_kang@wvi.org.
Benedict TuffuorTraining Research and Networking for Development, Post Office. Box Cantonments 6135, Cantonments, Accra, Ghana. btuffuor@gmail.com.
Gyuhong LeeKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. ghlee@koica.go.kr.
Jungmyung ChoKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. jmcho@koica.go.kr.
Jihye ChungWorld Vision Korea, 77-1, Yeouinaru-ro, Yeongdeungpo-gu, Seoul, 07327, Republic of Korea. jeehae_chung@wvi.org.
Myongjin KimKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. serenti@koica.go.kr.
Hoonsang LeeKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. hsl810@koica.go.kr.
Jaeeun LeeKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. jelee21@koica.go.kr.
Chunghyeon OhKorea International Cooperation Agency, 825 Daewangpangyo-ro, Sujeong-gu, Seongnam-si, Gyeongo-do 13449, Republic of Korea. och7512@koica.go.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although a number of studies have been conducted to explore the effect of water quality improvement, the majority of them have focused mainly on point-of-use water treatment, and the studies investigating the effect of improved water supply have been based on observational or inadequately randomized trials. We report the results of a matched cluster randomized trial investigating the effect of improved water supply on diarrheal prevalence of children under five living in rural areas of the Volta Region in Ghana. We compared the diarrheal prevalence of 305 children in 10 communities of intervention with 302 children in 10 matched communities with no intervention (October 2012 to February 2014). A modified Poisson regression was used to estimate the prevalence ratio. An intention-to-treat analysis was undertaken. The crude prevalence ratio of diarrhea in the intervention compared with the control communities was 0.85 (95% CI 0.74-0.97) for Krachi West, 0.96 (0.87-1.05) for Krachi East, and 0.91 (0.83-0.98) for both districts. Sanitation was adjusted for in the model to remove the bias due to residual imbalance since it was not balanced even after randomization. The adjusted prevalence ratio was 0.82 (95% CI 0.71-0.96) for Krachi West, 0.95 (0.86-1.04) for Krachi East, and 0.89 (0.82-0.97) for both districts. This study provides a basis for a better approach to water quality interventions.

Indexed as

Water SupplyAdultChild, PreschoolDiarrheaFemaleGhanaHumansInfantInfant, NewbornMaleMiddle AgedPrevalenceResidence CharacteristicsSanitationWater PurificationWater Qualitychildren under fivecluster-randomized controlled trialdiarrheaGhanaimproved water supply

Identifiers

PMID26404337
PMCPMC4626959

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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.