Evidence map›Paper›PMID 31973179›Full record

SynthesisInternational journal of environmental research and public health2020

System Approaches to Water, Sanitation, and Hygiene: A Systematic Literature Review.

Nicholas Valcourt, Amy Javernick-Will, Jeffrey Walters, Karl Linden

Registry-linked trialAbstract readSystematic Review
In one paragraph

Synthesis in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07195006 (Early Life Diarrhoea Episode), which is not on this map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 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.

NCT07195006 recruitingnot on this mapstarted 2025, after this paper: background citation

Early Life Diarrhoea Episode(s), Malnutrition, Environmental Enteric Dysfunction and Microbiome Trajectories From Birth Until 3 Years of Life ; The University of Zimbabwe Birth Cohort Study-2 (UZBCS-2)

TypeobservationalSponsorUniversity of ZimbabweRan2025 to 2032Enrolled368ConditionsMalnutrition Pregnancy, Malnutrition in Children, Malnutrition (Calorie), Environmental Enteric DysfunctionArmsMalnutrition in pregnancy as exposure, Poor WASH living conditions as exposure
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Trends of Water, Sanitation, and Hygiene (WASH) Research in Indonesia: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  3. Review
  4. Article
  5. Review of Frameworks for Assessing the Strength of the Sanitation Economy and Investment Readiness.International journal of environmental research and public health · 2025
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
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

4 authors.

Nicholas ValcourtDepartment of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.
Amy Javernick-WillDepartment of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.
Jeffrey WaltersUSAID Sustainable WASH Systems Learning Partnership, United State Agency for International Development, Washington, DC 20004, USA.
Karl LindenDepartment of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Endemic issues of sustainability in the water, sanitation, and hygiene (WASH) sector have led to the rapid expansion of 'system approaches' for assessing the multitude of interconnected factors that affect WASH outcomes. However, the sector lacks a systematic analysis and characterization of the knowledge base for systems approaches, in particular how and where they are being implemented and what outcomes have resulted from their application. To address this need, we conducted a wide-ranging systematic literature review of systems approaches for WASH across peer-reviewed, grey, and organizational literature. Our results show a myriad of methods, scopes, and applications within the sector, but an inadequate level of information in the literature to evaluate the utility and efficacy of systems approaches for improving WASH service sustainability. Based on this analysis, we propose four recommendations for improving the evidence base including: diversifying methods that explicitly evaluate interconnections between factors within WASH systems; expanding geopolitical applications; improving reporting on resources required to implement given approaches; and enhancing documentation of effects of systems approaches on WASH services. Overall, these findings provide a robust survey of the existing landscape of systems approaches for WASH and propose a path for future research in this emerging field.

Indexed as

HygieneSanitationWaterWater SupplyWatergrey literaturesystematic literature reviewsystems approachesWASH

Identifiers

PMID31973179
PMCPMC7037755

What OpenQuestion holds

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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.