Evaluation of the Efficacy of Sawyer Point One Filters in Schools and Homes in the Dominican Republic

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 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 including schools, homes, simultaneous home/school and a control group

Study Overview

• Status: Completed
• Conditions: Diarrhea
• Intervention / Treatment: Behavioral: Installation of water filtration system for filtering existing water source

Detailed Description

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
• Enrollment (Actual): 698
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Dominican Republic
  • Santo Domingo, Dominican Republic
    • Child Hope Network

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Lives in selected villages and has children that attend the local school

Exclusion Criteria:

• No children attending the local school

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Factorial Assignment
• Masking: None (Open Label)

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: School and village; Simultaneous installation of filters in schools and the village	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	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	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.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Diarrhea	self-report of diarrhea	2-weeks

Collaborators and Investigators

• Sponsor: Dordt University
• Investigators: Principal Investigator: Nathan Tintle, Ph.D., Dordt College

Publications and helpful links

General Publications

• Tintle N, Van De Griend K, Ulrich R, Wade RD, Baar TM, Boven E, Cooper CEA, Couch O, Eekhoff L, Fry B, Goszkowicz GK, Hecksel MA, Heynen A, Laughlin JA, Les SM, Lombard TR, Munson BD, Peterson JM, Schumann E, Settecerri DJ, Spry JE, Summerfield MJ, Sunder M, Wade DR, Zonnefeld CG, Brokus SA, Moen FS, Slater AD, Peterson JW, Pikaart MJ, Krueger BP, Best AA. Diarrhea prevalence in a randomized, controlled prospective trial of point-of-use water filters in homes and schools in the Dominican Republic. Trop Med Health. 2021 Jan 4;49(1):1. doi: 10.1186/s41182-020-00291-y.

Study record dates

Study Major Dates

• Study Start (Actual): September 22, 2018
• Primary Completion (Actual): March 1, 2019
• Study Completion (Actual): April 15, 2019

Study Registration Dates

• First Submitted: May 31, 2019
• First Submitted That Met QC Criteria: May 31, 2019
• First Posted (Actual): June 3, 2019

Study Record Updates

• Last Update Posted (Actual): June 3, 2019
• Last Update Submitted That Met QC Criteria: May 31, 2019
• Last Verified: May 1, 2019

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Signs and Symptoms, Digestive; Diarrhea
• Other Study ID Numbers: DR001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED
• IPD Plan Description: Available upon reasonable request

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No