NCT05833334 · Dartmouth-Hitchcock Medical Center
Healthy Homes Study
(HHS)
What this study is about
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\.
View original scientific description
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.
Interventions
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
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
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
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
Primary outcome measures
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.
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.
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.
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.
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.
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.
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.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
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
Where
- Lebanon, New Hampshire
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 30, 2026 · Source of record for eligibility and locations