Evaluation of Report-Back Strategies for Long-term and Short-term Exposure Information in Rural Tribal Populations

The goal of this study is to evaluate different ways to provide feedback about environmental sampling results to participants. Specifically, the study will look at exposures with long-term risk (radon) and short-term risk (indoor particulate matter, PM2.5). The hypothesis is that providing feedback in real-time will result in participants engaging in more activities to try to reduce their exposure. One of the main questions of interest is: How does the information messenger impact the effectiveness of report-back strategies in rural, tribal populations?

Participants will have radon and PM2.5 measurement equipment installed at their home and will answer questions about any actions they took to reduce exposure. Previously developed approaches to reporting back those exposures will be used to test which feedback method results in more actions to reduce exposure.

Study Overview

• Status: Not yet recruiting
• Conditions: Behavior Change
• Intervention / Treatment: Behavioral: Messenger 1; Behavioral: Messenger 2; Behavioral: Format 1; Behavioral: Format 2

• Study Type: Interventional
• Enrollment (Estimated): 112
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Darrah K Sleeth, PhD; Phone Number: 801-585-3587; Email: darrah.sleeth@hsc.utah.edu
• Study Contact Backup: Name: Scott Collingwood, PhD; Phone Number: 801-213-3726; Email: scott.collingwood@hsc.utah.edu

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Enrolled member of the participating tribe

Exclusion Criteria:

• Participant in one of our previous studies

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Real-Time Exposure Data; Participants in this arm will get their data reported-back in real-time. There will be a total of 4 different strategies tested based on a combination of two (2) messengers and two (2) formats tested.	Behavioral: Messenger 1; The first type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Messenger 2; The second type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Format 1; The first type of format (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Format 2; The second type of format (specific details TBD) that will be used to deliver the environmental sampling results.
Experimental: Delayed Exposure Data; Participants in this arm will get their data reported-back only after all exposure data are collected (i.e., delayed approximately 2 months). There will be a total of 4 different strategies tested based on a combination of two (2) messengers and two (2) formats tested.	Behavioral: Messenger 1; The first type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Messenger 2; The second type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Format 1; The first type of format (specific details TBD) that will be used to deliver the environmental sampling results.; Behavioral: Format 2; The second type of format (specific details TBD) that will be used to deliver the environmental sampling results.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Exposure Reduction Behaviors	This will be collected using a questionnaire with a likert scale from 1 (not at all) to 10 (a lot) of how often certain exposure-reduction behaviors are performed.	3 months after report-back
Exposure Reduction Behaviors	This will be collected using a questionnaire with a likert scale from 1 (not at all) to 10 (a lot) of how often certain exposure-reduction behaviors are performed.	6 months after report-back
Exposure Reduction Behaviors	This will be collected using a questionnaire with a likert scale from 1 (not at all) to 10 (a lot) of how often certain exposure-reduction behaviors are performed.	12 months after report-back

Collaborators and Investigators

• Sponsor: University of Utah
• Collaborators: National Institute of Environmental Health Sciences (NIEHS)

Study record dates

Study Major Dates

• Study Start (Estimated): October 1, 2026
• Primary Completion (Estimated): April 1, 2028
• Study Completion (Estimated): April 1, 2028

Study Registration Dates

• First Submitted: September 9, 2024
• First Submitted That Met QC Criteria: September 9, 2024
• First Posted (Actual): September 19, 2024

Study Record Updates

• Last Update Posted (Actual): December 12, 2025
• Last Update Submitted That Met QC Criteria: December 8, 2025
• Last Verified: December 1, 2025

More Information

Terms related to this study

• Keywords: exposure; Native American; particulate matter; PM2.5; radon; report-back
• Additional Relevant MeSH Terms: IGF2BP3 protein, human
• Other Study ID Numbers: R01ES036260 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

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