Improving Dietary Behavior Through Tailored Messages

NCT ID: NCT01864694

Last Updated: 2013-05-30

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 1224 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-11-30
• Study Completion Date: 2011-07-31

Brief Summary

The aim of this study is to compare a Web-based system and a computer telephone system to determine their effectiveness in improving diet behaviors compared to each other and a control group.

Detailed Description

The aim of this study is to compare a Web-based system (WEB-DIET) and a computer telephone system (TLC [Telephone Linked Communications]-DIET) for affecting dietary behavior change. These interventions will target the same dietary behaviors (consumption of fat and fruits and vegetables). The behavior change strategies and content will be derived from the same behavior change theory (the Transtheoretical Model [TTM]). A representative sample of ~1200 adults from a large urban area will be recruited through a list-assisted telephone list which will be bought by the University of Rhode Island so that subjects can be randomized into one of three groups: a Web-based system (WEB- DIET), a computer telephone system (TLC [Telephone Linked Communications]-DIET), or assessment only control. The study hypotheses, which will be evaluated both at the end of the 6-month intervention period and at the end of 18-month follow-up (post-baseline) observation period, are: 1. TLC-DIET> Control 2. WEB-DIET> Control 3. WEB-DIET> TLC-DIET.

Conditions

Cardiovascular Disease

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

TLC-Diet

Participants receive diet intervention through automated telephone system: TLC-Diet

Group Type: EXPERIMENTAL

TLC-Diet

Intervention Type: BEHAVIORAL

Participants receive diet intervention through an automated telephone system

WEB-Diet

Participants receive diet intervention through web-based system: WEB-Diet

Group Type: EXPERIMENTAL

WEB-Diet

Intervention Type: BEHAVIORAL

Participants receive diet intervention through a web-based system

Control

Assessment-only control group

Group Type: EXPERIMENTAL

Assessment-only control

Intervention Type: OTHER

Assessment-only control

Interventions

TLC-Diet

Participants receive diet intervention through an automated telephone system

Intervention Type: BEHAVIORAL

WEB-Diet

Participants receive diet intervention through a web-based system

Intervention Type: BEHAVIORAL

Assessment-only control

Assessment-only control

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• 18 years of age or older
• Be at risk with regard to saturated fat
• Have access to basic computer hardware and software
• Use the Internet regularly (defined as 1 times per week) and with basic proficiency
• Read and speak English at a fifth grade level
• Have access to a telephone and be able to use it independently.

Exclusion Criteria

• Prescribed a diet that would conflict with a low saturated fat (e.g., a colectomy diet)
• Have a serious medical, psychiatric, or cognitive disease that would interfere with participation (e.g., cancer undergoing chemotherapy, psychotic disorder, Alzheimer's disease, etc.)
• If the individual does not use the Internet at least once a week

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of Rhode Island

OTHER

Sponsor Role: collaborator

Boston Medical Center

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Robert H Friedman, MD

Role: PRINCIPAL_INVESTIGATOR

Boston University

Locations

Boston Medical Center

Boston, Massachusetts, United States

Countries

United States

Other Identifiers

5R01HL081380

Identifier Type: NIH

Identifier Source: org_study_id

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