NCT03255291CompletedNot Applicable
Communicating Multiple Disease Risks: A Translation of Risk Prediction Science
Washington University School of Medicine1 site in 1 country554 target enrollmentStarted: June 27, 2017Last updated:
Conditions
Interventions
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 554
- Locations
- 1
- Primary Endpoint
- Change From Baseline to 90-day Follow-up in Self Reported Weekly Minutes of Exercise
Study Overview
Brief Summary
Epidemiology seeks to improve public health by identifying risk factors for cancer and other diseases and conveying that information to relevant audiences (e.g., physicians, the public). The audience is presumed to understand and use that information to make appropriate decisions about lifestyle behaviors and medical treatments. Yet, even though a single risk factor can affect the risk of multiple health outcomes, this information is seldom communicated to people in a way that optimizes their understanding of the importance of engaging in a single healthy behavior. Providing individuals with the ability to understand how a single behavior (obtaining sufficient physical activity) could affect their risk of developing multiple diseases could foster a more coherent and meaningful picture of the behavior's importance in reducing health risks, increase motivation and intentions to engage in the behavior, and over time improve public health.
The proposed study translates epidemiological data about five diseases that cause significant morbidity and mortality (i.e., colon cancer, breast cancer (women), heart disease, diabetes, and stroke) into a visual display that conveys individualized risk estimates in a comprehensible, meaningful, and useful way to diverse lay audiences.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Factorial
- Primary Purpose
- Prevention
- Masking
- Single (Investigator)
Masking Description
The research staff will be blinded to participants' risk display format conditions, but they will be unblinded to mental imagery behavior condition
Eligibility Criteria
- Ages
- 30 Years to 64 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •30-64 years of age
- •Less than (3) relevant comorbidities (diabetes, heart disease, stroke, and cancer, where cancer counts as (2) comorbidities for women but (1) for men)
- •Having a SMS capable mobile phone that is not shared with anyone else
Exclusion Criteria
- •Not meeting national guidelines for aerobic physical activity (i.e., at least 150 minutes per week of moderate intensity aerobic physical activity)
- •Participants from HRPO# 201501028 will be ineligible for this study
- •Uses text messaging less than once per month
Arms & Interventions
Risk Display Format:Risk Ladder:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Risk Ladder:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Risk Ladder:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Exercise (Behavioral)
Risk Display Format:Risk Ladder:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Table: Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Risk Ladder:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Risk Display Format:Risk Ladder:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Risk Ladder:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Sleep (Behavioral)
Risk Display Format:Risk Ladder:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Risk Ladder:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Risk Ladder:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Risk Display Format:Table:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Table:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Table:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Exercise (Behavioral)
Risk Display Format:Table:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Table:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Risk Display Format:Table: Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Table: Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Sleep (Behavioral)
Risk Display Format:Table: Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Table: Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Risk Display Format:Text:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Text:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Text:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Exercise (Behavioral)
Risk Display Format:Text:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Text:Imagery Behavior:Exercise
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down an exercise goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Risk Display Format:Text:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Risk Assessment App (Behavioral)
Risk Display Format:Text:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Audio Recording - Sleep (Behavioral)
Risk Display Format:Text:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Surveys (Other)
Risk Display Format:Text:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text message reminders (Other)
Risk Display Format:Text:Imagery Behavior:Sleep
Experimental
- With help from a research assistant, participants complete the Risk Assessment App. The App asks demographic & health questions. It then provides personalized risk estimates for participants' current activity level & how it would change with regular exercise.
- Participants take Baseline Survey 1.
- Participants listen to an audio recording that guides them through a mental imagery activity. They write down a sleep goal & are asked to practice the mental imagery twice a day for 3 weeks.
- Participants take Baseline Survey 2.
- Participants receive text messages reminding them to practice the mental imagery twice daily for 5 minutes each time (3 texts a week for 3 weeks).
- Participants take surveys via text at the end of each week for 4 weeks.
- 90 days post-baseline, participants complete a survey sent through the mail.
- Participants may be contacted for another survey 1 year later.
Intervention: Text Message Survey (Other)
Outcomes
Primary Outcomes
Change From Baseline to 90-day Follow-up in Self Reported Weekly Minutes of Exercise
Time Frame: Baseline and up to 90 days
Difference in Gist Comprehension of Risk Information by Risk Display Format
Time Frame: Baseline
* Risk display format = risk ladder, table, or text * Gist comprehension of risk information: being able to extract the bottom-line meaning of information provided by the website (e.g., if exercising decreased heath risk) * Measured by the sum of (4) questions coded as correctly comprehending risk information (1 point) or incorrectly comprehending risk information (0 points), with a total score range of 0=low comprehension to 4=high comprehension. Higher comprehension is considered a better outcome. * All comprehension questions have an additional "don't know" option, which is counted as incorrect. * To limit participant burden, the investigators assessed comprehension for diabetes only, instead of all diseases as planned. * Comprehension will not be assessed for people who report a history of diabetes because they are not given risk information.
Difference in Verbatim Comprehension of Risk Information by Risk Communication Strategy
Time Frame: Baseline
* Risk communication strategy = risk ladder, table, or text * Verbatim comprehension of risk information: being able to recall the exact information specific to diabetes risk and hours of recommended weekly physical activity * Measured by the sum of (3) questions coded as correctly comprehending information (1 point) or incorrectly comprehending information (0 points), with a total score range of 0=low comprehension to 3=high comprehension. Higher comprehension is considered a better outcome. * All comprehension questions have an additional "don't know" option, which is counted as incorrect. * To limit participant burden, the investigators assessed comprehension for diabetes only, instead of all diseases as planned. * Comprehension will not be assessed for people who report a history of diabetes because they are not given risk information.
Difference in Self-reported Intentions to Engage in Physical Activity by Risk Display Format
Time Frame: Baseline
* Risk display format = risk ladder, table, or text * Self-reported physical activity intentions is defined as intentions to engage in physical activity in the next 3 months * Measured as an average of three variables, each measured on a 5 point Likert Scale (range: 1=lower intentions to 5=higher intentions) * Higher intentions are considered a better outcome
Secondary Outcomes
- Effect of the Intervention on Physical Activity Levels as Measured by Maintenance Self-efficacy(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Perceived Vividness of Self-regulatory Imagery(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Action Planning(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Recovery Self-efficacy(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Affective Attitudes to Exercise - Thinking Behavior is Unpleasant(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Affective Attitudes to Exercise - Enjoying Behavior(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Coping Planning(90 days)
- Effect of the Intervention on Physical Activity Levels as Measured by Action Self-efficacy(90 days)
Investigators
Study Sites (1)
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