Impact of Smoking Information on Concerns About Radon
1 other identifier
interventional
1,390
0 countries
N/A
Brief Summary
Despite a push for tailored messages, health communications are often aimed at, and viewed by, people with varying levels of risk. This project examined-in the context of radon risk messages-whether information relevant to high-risk individuals can have an unintended influence on lower-risk individuals. Specifically, the investigators assessed whether information about lung-cancer risk from smoking reduced concerns about lung-cancer risk from radon among nonsmokers. The investigators hypothesized that non-smokers who read a message that included smoking-relevant information would express less concern about the effects of radon exposure and less interest in testing their home compared to those who read a version in which smoking-relevant information was excluded. Two studies were conducted. Although the investigators did not exclude smokers, the focus was on participants self-identifying as nonsmokers (including never smokers and former smokers).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Aug 2015
Shorter than P25 for not_applicable
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
Study Start
First participant enrolled
August 7, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 22, 2016
CompletedStudy Completion
Last participant's last visit for all outcomes
April 22, 2016
CompletedFirst Submitted
Initial submission to the registry
March 30, 2018
CompletedFirst Posted
Study publicly available on registry
April 17, 2018
CompletedApril 19, 2019
April 1, 2019
9 months
March 30, 2018
April 17, 2019
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Conditional Concern Composite
Composite formed from 4 conditional questions assessing concern, perceived impact on risk and comparative risk, and threat--if exposed to radon
Immediately post-intervention (approx. 1 minute)
Interest in Testing Composite
Composite formed from 2 questions assessing importance and intention to test home for radon
Immediately post-intervention (approx. 2 minutes)
Secondary Outcomes (5)
Worry Elicited by Health Message
Immediately post-intervention (approx. 2 minutes)
Likelihood Judgments about Lung Cancer
Immediately post-intervention (approx. 4 minutes)
Elect to Leave Email for Raffle
Immediately post-intervention (approx. 4 minutes)
Elect to Read More
Immediately post-intervention (approx. 4 minutes)
Concern about Loved Ones If Exposed to Radon
Immediately post-intervention (approx. 4 minutes)
Study Arms (7)
Study 1: Radon&Smoking Synergistic/EPA
ACTIVE COMPARATORParticipants viewed radon and smoking risk information taken from the EPA's pamphlet on the dangers of radon gas exposure.
Study 1: Radon&Smoking Synergistic/Idaho
ACTIVE COMPARATORParticipants viewed radon and smoking risk information taken from Idaho's Department of Health and Human Welfare's pamphlet on the dangers of radon gas exposure.
Study 1: Radon Only / EPA
EXPERIMENTALParticipants viewed only radon risk information taken from the EPA's pamphlet on the dangers of radon gas exposure.
Study 1: Radon Only / Idaho
EXPERIMENTALParticipants viewed only radon risk information taken from Idaho's Department of Health and Human Welfare's pamphlet on the dangers of radon gas exposure.
Study 2: Radon Only
EXPERIMENTALParticipants viewed a radon-only message that focused only on the effect of radon on lung-cancer risk.
Study 2: Radon and Smoking Isolated
OTHERParticipants viewed a radon-and-smoking-isolated message that covered the individual effects of radon and of smoking on lung cancer, but without mentioning their synergistic effect.
Study 2: Radon & Smoking Synergistic
ACTIVE COMPARATORParticipants viewed a radon-and-smoking-synergistic message that covered the individual effects of radon and of smoking but that also included information about their synergistic effect.
Interventions
Participants viewed health information detailing the risks of developing lung cancer from exposure to radon gas, smoking, and their synergistic effects. This intervention represents the type of information most commonly presented in radon risk communications.
Participants viewed health information detailing the risks of developing lung cancer from radon exposure. No information about the risks for developing lung cancer associated with smoking or its synergistic effect with radon exposure are included.
Participants viewed health information detailing the risks of developing lung cancer from radon exposure and smoking. No information describing the synergistic effects of smoking and radon exposure on lung cancer risk are included.
Health information modeled after the Environmental Protection Agency's (EPA) pamphlet on radon risk.
Health information modeled after the Idaho Department of Health and Human Welfare's pamphlet on radon risk.
Eligibility Criteria
You may qualify if:
- Live within the US
- Have an Amazon Mechanical Turk account (website where online study was posted)
You may not qualify if:
- None
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Paul Windschitllead
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- PARTICIPANT
- Masking Details
- Participants blinded to condition.
- Purpose
- PREVENTION
- Intervention Model
- FACTORIAL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR INVESTIGATOR
- PI Title
- Professor
Study Record Dates
First Submitted
March 30, 2018
First Posted
April 17, 2018
Study Start
August 7, 2015
Primary Completion
April 22, 2016
Study Completion
April 22, 2016
Last Updated
April 19, 2019
Record last verified: 2019-04
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- ANALYTIC CODE
- Time Frame
- Requested data will be made available upon publication of the project.
- Access Criteria
- Please contact corresponding author Dr. Paul Windschitl at paul-windschitl@uiowa.edu
De-identified data and guide will be made available to other investigators upon request.