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The Dietary Intervention in e-Shopping Trial

NCT ID: NCT00352508

Last Updated: 2006-07-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

500 participants

Study Classification

INTERVENTIONAL

Study Start Date

2004-09-30

Study Completion Date

2004-12-31

Brief Summary

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The supermarket industry now services many customers through online food shopping over the Internet. The Internet shopping process offers a novel opportunity for the modification of dietary patterns. The aim of this study was to evaluate the effects on consumers' purchases of saturated fat of a fully automated computerised system that provided real-time, personally tailored advice recommending foods lower in saturated fat.

Detailed Description

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Objective The supermarket industry now services many customers through online food shopping over the Internet. The Internet shopping process offers a novel opportunity for the modification of dietary patterns. The aim of this study was to evaluate the effects on consumers' purchases of saturated fat of a fully automated computerised system that provided real-time, personally tailored advice recommending foods lower in saturated fat.

Design Blinded, randomized controlled trial.

Setting \& Participants Consumers using a commercial on-line Internet shopping site between February and June 2004.

Intervention Individuals assigned to intervention received fully automated individually tailored advice that recommended specific switches from selected products higher in saturated fat to alternate similar products lower in saturated fat. Participants assigned to control received general non-specific advice about how to eat a diet lower in saturated fat.

Outcome measure The percent of food purchased that was saturated fat. Results There were 497 randomised participants, mean age 40 each shopping for an average of about 3 people. The amount of saturated fat in the foods purchased by the intervention group was 0.66% lower (95% confidence interval 0.48-0.84, p\<0.0001) than in the control group. The effects of the intervention were sustained over time and there was no difference in the average cost of the food bought by each group.

Conclusions Fully automated, personally tailored dietary advice offered to customers doing Internet shopping can bring about changes in food purchasing habits that are likely to have significant public health implications. Because implementation is simple to initiate and maintain this strategy would likely be highly cost-effective.

Conditions

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Behaviour

Keywords

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Internet, dietary advice, saturated fat

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

ECT

Blinding Strategy

DOUBLE

Interventions

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Dietary advice

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

\- Consumers using a commercial on-line Internet shopping site between February and June 2004.

Exclusion Criteria

Children, non-internet shoppers

\-
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The George Institute

OTHER

Sponsor Role lead

Principal Investigators

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Bruce Neal, PhD

Role: PRINCIPAL_INVESTIGATOR

The George Institute

Locations

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The George Institute

Sydney, New South Wales, Australia

Site Status

Countries

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Australia

Other Identifiers

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Diet2006

Identifier Type: -

Identifier Source: org_study_id