Evaluation of the Efficacy of Sawyer Point One Filters in Schools and Homes in the Dominican Republic
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ClinicalTrials.gov Identifier: NCT03972618 |
Recruitment Status :
Completed
First Posted : June 3, 2019
Last Update Posted : June 3, 2019
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Condition or disease | Intervention/treatment | Phase |
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Diarrhea | Behavioral: Installation of water filtration system for filtering existing water source | Not Applicable |
Nathan Tintle, in conjunction with others at Dordt College including Dr. Kristin Van De Griend and undergraduate student research assistants, have agreed to collaborate with Hope College and Sawyer Products, Inc. to analyze the impact of different water filter deployment strategies in schools and villages on diarrhea and other medical and economic outcomes. The distribution of the water filters will begin in September 2018 to Child Hope schools in 4 different countries (Dominican Republic, Guatemala, Honduras, and Nicaragua). In order to evaluate efficacy of alternative filter deployment strategies, filters will be distributed in 4 separate treatment arms:
Arm 1: Simultaneous installation of filters in schools and the villages sending children to the school Arm 2: Initial installation of the water filters in a school, with later installation in the corresponding village Arm 3: Instillation of the water filters in villages, with later installation in the corresponding school Arm 4: Control arm. No filter installation initially but, ultimately, installation of filters in both the schools and villages.
Self-reported information on filter usage and health outcomes will be collected through surveys administered to parents (in the households in the villages), teachers (in the schools) and school administrators. Data collection will occur at baseline (when filters are installed), at 2 and 8 weeks post installation. The major goal of this project is to better understand the different health impacts of each different deployment strategy on child and family wellbeing. Better understanding of these filter installation strategies will help guide us as we make filter deployment decisions to provide access to clean drinking water.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 698 participants |
Allocation: | Randomized |
Intervention Model: | Factorial Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | Evaluation of the Efficacy of Sawyer Point One Filters in Schools and Homes in the Dominican Republic |
Actual Study Start Date : | September 22, 2018 |
Actual Primary Completion Date : | March 1, 2019 |
Actual Study Completion Date : | April 15, 2019 |
Arm | Intervention/treatment |
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Experimental: School and village
Simultaneous installation of filters in schools and the village
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Behavioral: Installation of water filtration system for filtering existing water source
Installation of water filtration system and education on hand washing. |
Experimental: School only
Initial installation in school only
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Behavioral: Installation of water filtration system for filtering existing water source
Installation of water filtration system and education on hand washing. |
Experimental: Village only
Initial installation in village only
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Behavioral: Installation of water filtration system for filtering existing water source
Installation of water filtration system and education on hand washing. |
No Intervention: Control
Control group. No filter installation initially.
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- Diarrhea [ Time Frame: 2-weeks ]self-report of diarrhea

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Lives in selected villages and has children that attend the local school
Exclusion Criteria:
- No children attending the local school

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03972618
Dominican Republic | |
Child Hope Network | |
Santo Domingo, Dominican Republic |
Principal Investigator: | Nathan Tintle, Ph.D. | Dordt College |
Responsible Party: | Dordt University |
ClinicalTrials.gov Identifier: | NCT03972618 |
Other Study ID Numbers: |
DR001 |
First Posted: | June 3, 2019 Key Record Dates |
Last Update Posted: | June 3, 2019 |
Last Verified: | May 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Plan Description: | Available upon reasonable request |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Diarrhea Signs and Symptoms, Digestive |