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Local Drinking Water Filters Reduce Diarrheal Disease in Cambodia: A Randomized, Controlled Trial of the Ceramic Water Purifier
Open accessAbstract
A randomized, controlled intervention trial of two household-scale drinking water filters was conducted in a rural village in Cambodia. After collecting four weeks of baseline data on household water quality, diarrheal disease, and other data related to water use and handling practices, households were randomly assigned to one of three groups of 60 households: those receiving a ceramic water purifier (CWP), those receiving a second filter employing an iron-rich ceramic (CWP-Fe), and a control group receiving no intervention. Households were followed for 18 weeks post-baseline with biweekly follow-up. Households using either filter reported significantly less diarrheal disease during the study compared with a control group of households without filters as indicated by longitudinal prevalence ratios CWP: 0.51 (95% confidence interval [CI]: 0.41-0.63); CWP-Fe: 0.58 (95% CI: 0.47-0.71), an effect that was observed in all age groups and both sexes after controlling for clustering within households and within individuals over time.
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“Only four studies of drinking water (three POU filter studies36, 37, 38 and one POU chlorine study39) reported results by sex; thus, our estimates are not disaggregated by sex (appendix 1 pp 5–7).”
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Metadata
- Authors
- Brown, J., Sobsey, M. D., & Loomis, D.
- Affiliations
- University of Nevada, Reno (US)
- Corresponding author
- Brown, Joe
- Venue
- The American Journal of Tropical Medicine and Hygiene
- Published
- 2008-09
- Volume
- 79
- Issue
- 3
- Pages
- 394-400
- ISSN
- 0002-9637 (ISSN-L)
- OpenAlex
- W2164819406
- Cited by
- 152
- References
- 33
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 4 · 2023: 14 · 2022: 13 · 2021: 9 · 2020: 7 · 2019: 8 · 2018: 7 · 2017: 6 · 2016: 12 · 2015: 8 · 2014: 11 · 2013: 11 · 2012: 8
- FWCI
- 6.95
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- American Journal of Tropical Medicine and Hygiene (publishedVersion)
- PubMed (publishedVersion)
- LSHTM Research Online (London School of Hygiene and Tropical Medicine) (acceptedVersion)
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Child Nutrition and Water Access
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
- Physical Sciences › Environmental Science › Water Science and Technology › Fecal contamination and water quality
- Keywords
- household water filters, diarrheal disease, drinking water quality, rural households, waterborne disease prevention, Cambodia
- MeSH terms
- Adolescent, Adult, Aged, Aged, 80 and over, Cambodia, Ceramics, Child, Child, Preschool, Diarrhea, Female, Filtration, Humans, Infant, Infant, Newborn, Iron, Longitudinal Studies, Male, Middle Aged, Rural Health, Water Microbiology, Water Supply, Cohort Studies, Prevalence, Water Purification
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