NCT06593340

Brief Summary

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.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
112

participants targeted

Target at P50-P75 for not_applicable

Timeline
18mo left

Started Oct 2026

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 9, 2024

Completed
10 days until next milestone

First Posted

Study publicly available on registry

September 19, 2024

Completed
2 years until next milestone

Study Start

First participant enrolled

October 1, 2026

Expected
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2028

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2028

Last Updated

December 12, 2025

Status Verified

December 1, 2025

Enrollment Period

1.5 years

First QC Date

September 9, 2024

Last Update Submit

December 8, 2025

Conditions

Keywords

exposureNative Americanradonparticulate matterPM2.5report-back

Outcome Measures

Primary Outcomes (3)

  • 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

Study Arms (2)

Real-Time Exposure Data

EXPERIMENTAL

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 1Behavioral: Messenger 2Behavioral: Format 1Behavioral: Format 2

Delayed Exposure Data

EXPERIMENTAL

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 1Behavioral: Messenger 2Behavioral: Format 1Behavioral: Format 2

Interventions

Messenger 2BEHAVIORAL

The second type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.

Delayed Exposure DataReal-Time Exposure Data
Format 1BEHAVIORAL

The first type of format (specific details TBD) that will be used to deliver the environmental sampling results.

Delayed Exposure DataReal-Time Exposure Data
Format 2BEHAVIORAL

The second type of format (specific details TBD) that will be used to deliver the environmental sampling results.

Delayed Exposure DataReal-Time Exposure Data
Messenger 1BEHAVIORAL

The first type of messenger (specific details TBD) that will be used to deliver the environmental sampling results.

Delayed Exposure DataReal-Time Exposure Data

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Enrolled member of the participating tribe

You may not qualify if:

  • Participant in one of our previous studies

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

IGF2BP3 protein, human

Central Study Contacts

Darrah K Sleeth, PhD

CONTACT

Scott Collingwood, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

September 9, 2024

First Posted

September 19, 2024

Study Start (Estimated)

October 1, 2026

Primary Completion (Estimated)

April 1, 2028

Study Completion (Estimated)

April 1, 2028

Last Updated

December 12, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share