Hygiene and health: Systematic review of handwashing practices worldwide and update of health effects

Freeman, Matthew C., Stocks, Meredith E., Cumming, Oliver, Jeandron, Aurelie, Higgins, Julian P. T., Wolf, Jennyfer, Prüss-Ustün, Annette, Bonjour, Sophie, Hunter, Paul R. ORCID: https://orcid.org/0000-0002-5608-6144, Fewtrell, Lorna and Curtis, Valerie (2014) Hygiene and health: Systematic review of handwashing practices worldwide and update of health effects. Tropical Medicine & International Health, 19 (8). pp. 906-916. ISSN 1360-2276

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Abstract

Objective: To estimate the global prevalence of handwashing with soap and derive a pooled estimate of the effect of hygiene on diarrhoeal diseases, based on a systematic search of the literature. Methods: Studies with data on observed rates of handwashing with soap published between 1990 and August 2013 were identified from a systematic search of PubMed, Embase and ISI Web of Knowledge. A separate search was conducted for studies on the effect of hygiene on diarrhoeal disease that included randomised controlled trials, quasi-randomised trials with control group, observational studies using matching techniques and observational studies with a control group where the intervention was well defined. The search used Cochrane Library, Global Health, BIOSIS, PubMed, and Embase databases supplemented with reference lists from previously published systematic reviews to identify studies published between 1970 and August 2013. Results were combined using multilevel modelling for handwashing prevalence and meta-regression for risk estimates. Results: From the 42 studies reporting handwashing prevalence we estimate that approximately 19% of the world population washes hands with soap after contact with excreta (i.e. use of a sanitation facility or contact with children's excreta). Meta-regression of risk estimates suggests that handwashing reduces the risk of diarrhoeal disease by 40% (risk ratio 0.60, 95% CI 0.53-0.68); however, when we included an adjustment for unblinded studies, the effect estimate was reduced to 23% (risk ratio 0.77, 95% CI 0.32-1.86). Conclusions: Our results show that handwashing after contact with excreta is poorly practiced globally, despite the likely positive health benefits.

Item Type: Article
Uncontrolled Keywords: hygiene,diarrhoea,handwashing,risk estimates,meta-analysis,sdg 3 - good health and well-being ,/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_being
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups: Faculty of Medicine and Health Sciences > Research Groups > Epidemiology and Public Health
Faculty of Medicine and Health Sciences > Research Groups > Public Health and Health Services Research (former - to 2023)
Faculty of Social Sciences > Research Centres > Water Security Research Centre
Faculty of Medicine and Health Sciences > Research Centres > Population Health
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Depositing User: Pure Connector
Date Deposited: 21 Jan 2015 12:34
Last Modified: 19 Oct 2023 01:25
URI: https://ueaeprints.uea.ac.uk/id/eprint/51911
DOI: 10.1111/tmi.12339

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