Healthy Homes Study (HHS)

August 1, 2023 updated by: Judith R. Rees, Dartmouth-Hitchcock Medical Center

Co-developing and Pilot Testing a Risk-tailored, Technology-supported Intervention to Increase Home Radon Testing in New Hampshire and Vermont

This study is about home air radon testing and has two phases.

The goal of the first phase is to learn about renters' and homeowners' views and plans related to radon testing. The main question this phase aims to answer is:

1. Does taking part in a focus group with information about radon testing change people's plans to test for radon?

Participants in the first study phase will:

  • Take a survey about their views on and plans for radon testing.
  • Take part in a focus group discussion about radon testing, during which they will receive information about radon testing.
  • Right after the focus group, take a survey about their plans for radon testing.

The second phase is a pilot interventional study. The goal is to test interventions about radon testing with renters and homeowners who smoke and do not smoke. The main questions this phase aims to answer are:

  1. Does the recruitment strategy result in enough participants enrolling within 3 months?
  2. Will at least 80% of participants complete data collection activities?
  3. Will more participants who view an online intervention developed by the researchers request free radon test kits, set them up in their homes, and complete radon testing, compared to participants who view a standard public health infographic? And will even more participants who receive reminder messages, in addition to the online intervention, request free radon test kits, set them up in their homes, and complete radon testing?

Participants in this second phase will:

  • Take a survey about their views on and plans for radon testing.
  • View an intervention about radon testing.
  • Right after viewing the intervention, take a survey about their views on and plans for radon testing.
  • 2 months later, take a survey about what, if any, steps they've taken to test their homes for radon.
  • Provide the researchers permission to collect data from their State Radon Program on: a) whether they requested a free radon test kit and b) whether testing was completed.

Some participants will receive reminder messages for 2 months after viewing the intervention.

Researchers will compare an online intervention they developed about radon testing to: a) a standard public health infographic and b) their online intervention combined with reminder messages about radon testing. They will compare the interventions by proportion of participants who: a) request a free radon test kit from their State Radon Programs, b) set-up the radon test kit in their homes, and c) complete radon testing.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

This study is a pilot research study.

Study Type

Interventional

Enrollment (Estimated)

172

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Be at least 18 years old
  • Have a valid mailing address in New Hampshire or Vermont,
  • Have not tested their current homes for radon,
  • Rent or own their home, and
  • Live at their home year-round

Exclusion Criteria:

  • N/A

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Public health infographic (AIM 3)
Participants will view a standard public health infographic about home air radon testing and will receive information about requesting a free home air radon test kit from their state radon program.
Behavioral: Public health infographic (AIM 3)
Standard public health infographic about home air radon testing, plus information about requesting a free home air radon test kit
Experimental: Online health promotion intervention tailored by smoking status (AIM 3)
Participants will view an online health promotion intervention about home air radon testing, with messaging tailored based on whether the participant smokes or does not smoke. Participants will also receive information about requesting a free home air radon test kit from their state radon program.
Behavioral: Online health promotion intervention tailored by smoking status (AIM 3)
Online health promotion intervention with messaging about home air radon testing tailored by the participant's stated smoking status, plus information about requesting a free home air radon test kit
Experimental: Online health promotion intervention tailored by smoking status, plus reminder messages (AIM 3)
Participants will view an online health promotion intervention about home air radon testing, with messaging tailored based on whether the participant smokes or does not smoke. Participants will also receive information about requesting a free home air radon test kit from their state radon program, as well as reminder messages about radon testing for about two months after initially viewing the online intervention component.
Behavioral: Online health promotion intervention tailored by smoking status, plus reminder messages (AIM 3)
Online health promotion intervention with messaging about home air radon testing tailored by the participant's stated smoking status, plus information about requesting a free home air radon test kit, plus reminder messages about home air radon testing sent over two months
Experimental: Focus group with educational overview (AIM 1)
Participants will participate in a focus group discussion about radon testing and will receive a brief educational overview about radon testing.
Behavioral: Focus group with educational overview (AIM 1)
90-minute online focus group discussion about home air radon testing, plus an educational overview about home air radon testing using a standard public health infographic

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of participants enrolled in the study (AIM 3)
Time Frame: 3 months
Number of participants who consent into the study and meet eligibility criteria within 3 months of study opening to enrollment.
3 months
Proportion of study participants who complete all study surveys (AIM 3)
Time Frame: 2 months
Proportion of study participants who complete all study-related surveys, including the pre-intervention survey, post-intervention survey, and follow-up survey at 2 months post-intervention.
2 months
Proportion of participants who request a home radon test kit at 18 months (AIM 3)
Time Frame: 18 months
Proportion of participants, by study arm, who request a free home radon test kit from the New Hampshire Radon Program or Vermont Radon Program in the 18 months following the intervention, the New Hampshire Radon Program or Vermont Radon Program, as reported by the state radon programs; radon test kits are attributed to participants if the state radon program records match the participant's name and/or address of home residence.
18 months
Proportion of participants who request a home radon test kit at 2 months (AIM 3)
Time Frame: 2 months
Proportion of participants, by study arm, who request a free home radon test kit from the New Hampshire Radon Program or Vermont Radon Program in the 18 months following the intervention, the New Hampshire Radon Program or Vermont Radon Program, as reported by the state radon programs; radon test kits are attributed to participants if the state radon program records match the participant's name and/or address of home residence.
2 months
Proportion of participants who set-up a home radon test kit in their home (AIM 3)
Time Frame: 2 months
Proportion of participants, by study arm, who report setting up the a home radon test kit in their home at two months post-intervention.
2 months
Proportion of participants who complete home radon testing at 18 months (AIM 3)
Time Frame: 18 months
Proportion of participants, by study arm who either: a) report completing radon testing via the follow-up survey at two months post-intervention, or b) submit a home radon test kit for analysis through the New Hampshire Radon Program or Vermont Radon Program, as reported by the state radon programs; radon test kits are attributed to participants if the state radon program records match the participant's name and/or address of home residence.
18 months
Proportion of participants who complete home radon testing at 2 months (AIM 3)
Time Frame: 2 months
Proportion of participants, by study arm who either: a) report completing radon testing via the follow-up survey at two months post-intervention, or b) submit a home radon test kit for analysis through the New Hampshire Radon Program or Vermont Radon Program, as reported by the state radon programs; radon test kits are attributed to participants if the state radon program records match the participant's name and/or address of home residence.
2 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in participants' intentions to test the air in their homes for radon in the next 12 months (AIM 1)
Time Frame: Baseline (pre-test, approximately 1-4 weeks before intervention), immediately after the intervention (post-test)
Intention to test will be measured on a scale of 0 to 10, with 0 indicating they definitely will not test their home air for radon and 10 indicating they definitely will test their home air for radon in the next 12 months.
Baseline (pre-test, approximately 1-4 weeks before intervention), immediately after the intervention (post-test)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Dartmouth-Hitchcock Medical Center

Investigators

  • Principal Investigator: Judith R Rees, BM, BCh, PhD, Dartmouth-Hitchcock Medical Center
  • Principal Investigator: Rian M Hasson, MD, MPH, Dartmouth-Hitchcock Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 1, 2023

Primary Completion (Estimated)

July 15, 2025

Study Completion (Estimated)

July 15, 2025

Study Registration Dates

First Submitted

April 17, 2023

First Submitted That Met QC Criteria

April 17, 2023

First Posted (Actual)

April 27, 2023

Study Record Updates

Last Update Posted (Actual)

August 2, 2023

Last Update Submitted That Met QC Criteria

August 1, 2023

Last Verified

August 1, 2023

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • STUDY02001931

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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