NCT03255291

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.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
554

participants targeted

Target at P75+ for not_applicable healthy-volunteers

Timeline
Completed

Started Jun 2017

Typical duration for not_applicable healthy-volunteers

Geographic Reach
1 country

1 active site

Status
completed

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

June 27, 2017

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

August 7, 2017

Completed
14 days until next milestone

First Posted

Study publicly available on registry

August 21, 2017

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 3, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 3, 2019

Completed
1 year until next milestone

Results Posted

Study results publicly available

January 18, 2020

Completed
Last Updated

January 18, 2020

Status Verified

January 1, 2020

Enrollment Period

1.5 years

First QC Date

August 7, 2017

Results QC Date

December 12, 2019

Last Update Submit

January 9, 2020

Conditions

Outcome Measures

Primary Outcomes (4)

  • Change From Baseline to 90-day Follow-up in Self Reported Weekly Minutes of Exercise

    Baseline and up to 90 days

  • Difference in Gist Comprehension of Risk Information by Risk Display Format

    * 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.

    Baseline

  • Difference in Verbatim Comprehension of Risk Information by Risk Communication Strategy

    * 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.

    Baseline

  • Difference in Self-reported Intentions to Engage in Physical Activity by Risk Display Format

    * 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

    Baseline

Secondary Outcomes (8)

  • 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 Recovery Self-efficacy

    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 Affective Attitudes to Exercise - Thinking Behavior is Unpleasant

    90 days

  • Effect of the Intervention on Physical Activity Levels as Measured by Perceived Vividness of Self-regulatory Imagery

    90 days

  • +3 more secondary outcomes

Study Arms (6)

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.

Behavioral: Risk Assessment AppOther: SurveysBehavioral: Audio Recording - ExerciseOther: Text message remindersOther: Text Message Survey

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.

Behavioral: Risk Assessment AppBehavioral: Audio Recording - SleepOther: SurveysOther: Text message remindersOther: Text Message Survey

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.

Behavioral: Risk Assessment AppOther: SurveysBehavioral: Audio Recording - ExerciseOther: Text message remindersOther: Text Message Survey

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.

Behavioral: Risk Assessment AppBehavioral: Audio Recording - SleepOther: SurveysOther: Text message remindersOther: Text Message Survey

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.

Behavioral: Risk Assessment AppOther: SurveysBehavioral: Audio Recording - ExerciseOther: Text message remindersOther: Text Message Survey

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.

Behavioral: Risk Assessment AppBehavioral: Audio Recording - SleepOther: SurveysOther: Text message remindersOther: Text Message Survey

Interventions

The App provides participants with personalized risk results for colon cancer, breast cancer (women), heart disease, diabetes, and stroke.

Risk Display Format:Risk Ladder:Imagery Behavior:ExerciseRisk Display Format:Risk Ladder:Imagery Behavior:SleepRisk Display Format:Table: Imagery Behavior:SleepRisk Display Format:Table:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:Sleep

-Participants imagine themselves improving sleep hygiene

Risk Display Format:Risk Ladder:Imagery Behavior:SleepRisk Display Format:Table: Imagery Behavior:SleepRisk Display Format:Text:Imagery Behavior:Sleep
SurveysOTHER

Assesses information comprehension, intentions, perceived risk and severity worry, self- efficacy, response efficacy, affect, race, education, age, numeracy, graph literacy, and exercise and sleep behaviors.

Risk Display Format:Risk Ladder:Imagery Behavior:ExerciseRisk Display Format:Risk Ladder:Imagery Behavior:SleepRisk Display Format:Table: Imagery Behavior:SleepRisk Display Format:Table:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:Sleep

Participants imagine themselves improving exercise

Risk Display Format:Risk Ladder:Imagery Behavior:ExerciseRisk Display Format:Table:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:Exercise

-Reminders to practice mental imagery

Risk Display Format:Risk Ladder:Imagery Behavior:ExerciseRisk Display Format:Risk Ladder:Imagery Behavior:SleepRisk Display Format:Table: Imagery Behavior:SleepRisk Display Format:Table:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:Sleep

-Assesses exercise behavior, intentions, actions plans, self-efficacy, affect, imagery vividness, and practice.

Risk Display Format:Risk Ladder:Imagery Behavior:ExerciseRisk Display Format:Risk Ladder:Imagery Behavior:SleepRisk Display Format:Table: Imagery Behavior:SleepRisk Display Format:Table:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:ExerciseRisk Display Format:Text:Imagery Behavior:Sleep

Eligibility Criteria

Age30 Years - 64 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • 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

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Washington University School of Medicine

St Louis, Missouri, 63110, United States

Location

Related Links

MeSH Terms

Interventions

Surveys and Questionnaires

Intervention Hierarchy (Ancestors)

Data CollectionEpidemiologic MethodsInvestigative TechniquesHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public Health

Results Point of Contact

Title
Erika Waters, MPH, Ph.D.
Organization
Washington University School of Medicine

Study Officials

  • Erika Waters, MPH, Ph.D.

    Washington University School of Medicine

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Masking Details
The research staff will be blinded to participants' risk display format conditions, but they will be unblinded to mental imagery behavior condition
Purpose
PREVENTION
Intervention Model
FACTORIAL
Model Details: Participants were randomly assigned by a computer algorithm to one of six intervention arms according to a 3 (risk display format: text, table, ladder) x 2 (imagery behavior: exercise, sleep) between-subjects factorial design. Although randomization was done at the same time and at the beginning of the study, participants received the risk display intervention first, then answered a survey containing two of the primary outcomes, then received the mental imagery intervention followed by another survey.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 7, 2017

First Posted

August 21, 2017

Study Start

June 27, 2017

Primary Completion

January 3, 2019

Study Completion

January 3, 2019

Last Updated

January 18, 2020

Results First Posted

January 18, 2020

Record last verified: 2020-01

Data Sharing

IPD Sharing
Will not share

Locations