Improving Dietary Behavior Through Tailored Messages

Boston Medical Center (BMC)

Status: Completed

Conditions: Cardiovascular Disease

Treatments: Behavioral: TLC-Diet; Other: Assessment-only control; Behavioral: WEB-Diet

Study type: Interventional

Funder types: Other

Identifiers

NCT01864694

5R01HL081380

Details and patient eligibility

About

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.

Full 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.

Enrollment: 1,224 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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1,224 participants in 3 patient groups

TLC-Diet

Experimental group

Description:

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

Treatment:

Behavioral: TLC-Diet

WEB-Diet

Experimental group

Description:

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

Treatment:

Behavioral: WEB-Diet

Control

Experimental group

Description:

Assessment-only control group

Treatment:

Other: Assessment-only control