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Randomized Controlled Trial
. 2012 Jun;86(6):913-21.
doi: 10.4269/ajtmh.2012.11-0066.

A randomized controlled trial of the plastic-housing BioSand filter and its impact on diarrheal disease in Copan, Honduras

Anna M Fabiszewski de Aceituno  1 , Christine E Stauber, Adam R Walters, Rony E Meza Sanchez, Mark D Sobsey
Affiliations
Randomized Controlled Trial

A randomized controlled trial of the plastic-housing BioSand filter and its impact on diarrheal disease in Copan, Honduras

Anna M Fabiszewski de Aceituno et al. Am J Trop Med Hyg. 2012 Jun.

Abstract

Point of use drinking water treatment with the BioSand filter (BSF) allows people to treat their water in the home. The purpose of this research was to document the ability of the Hydraid plastic-housing BSF to reduce diarrheal disease in households who received a BSF in a randomized controlled trial. The trial of the Hydraid plastic-housing BSF was carried out in rural, mountainous communities in Copan, Honduras during April of 2008 to February of 2009. A logistic regression adjusting for clustering showed that the incidence of diarrheal disease in children under 5 years was reduced by approximately 45% (odds ratio = 0.55, 95% confidence interval = 0.28, 1.10) in households that had a BSF compared with those households without a BSF, but this finding fluctuated depending on season and was not statistically significant. Households with a BSF had significantly better drinking water quality regardless of water source or season.

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Figures

Figure 1.
Figure 1.
Diagram and timeline of household enrollment and participation in a randomized control trial of the Hydraid plastic-housing BSF in Santa Rosa de Copan, Honduras, from April of 2008 to February of 2009.
Figure 2.
Figure 2.
Monthly incidence of diarrhea (cases per person-year) in BSF intervention and control groups over the longitudinal study period from May of 2008 to February of 2009 and rainfall (mm/month) on a 1-month lag during a randomized controlled trial of the Hydraid plastic-housing BSF in Santa Rosa de Copan, Honduras, from May of 2008 to February of 2009. The solid vertical line indicates when BSFs were installed in the intervention homes, and the dashed vertical line indicates 100 days after installation. The gray-shaded area indicates the months that were considered the rainy season (July to October).
See this image and copyright information in PMC

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