Effects of Online Dietary Advice on Fat Purchases
Author Information
Author(s): Amy Huang, Federica Barzi, Rachel Huxley, Gareth Denyer, Beth Rohrlach, Kathy Jayne, Bruce Neal
Primary Institution: George Institute for International Health, University of Sydney
Hypothesis
Can providing tailored dietary advice during online shopping reduce saturated fat purchases?
Conclusion
Automated dietary advice during online shopping can significantly reduce saturated fat purchases.
Supporting Evidence
- Participants receiving tailored advice bought foods with 0.66% less saturated fat than those receiving general advice.
- The intervention was effective across multiple shopping episodes.
- Cost of food purchased was similar between intervention and control groups.
Takeaway
When people got specific advice on what to buy while shopping online, they chose foods with less fat. This is good for their health!
Methodology
Blinded, randomised controlled trial with participants receiving tailored dietary advice based on their shopping choices.
Potential Biases
Potential bias due to self-selection of participants who are more health-conscious.
Limitations
Participants may not represent the general population as they were all Internet shoppers and technically aware.
Participant Demographics
Mean age 40 years, 88% female.
Statistical Information
P-Value
p<0.001
Confidence Interval
0.48–0.84
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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