Adherence
Combining default order alteration and explicit swaps does not significantly increase the reduction in saturated fat compared to altering the default order alone.
If you are designing an online grocery platform, you do not need to implement both default ordering and explicit swaps. Implementing default ordering (sorting by SFA) is sufficient to achieve the maximum reduction in saturated fat. Adding explicit swaps provides no significant additional benefit and may increase complexity.
The combined intervention (n = 273) was significantly more effective than control... and swaps alone... but there was no difference from altering the default order alone (− 0.4% (95%CI: − 1.8 to 0.9), p = 0.04 for interaction).
Why this rating
RCT with large sample size, simulated environment.
Source
Prominent positioning and food swaps are effective interventions to reduce the saturated fat content of the shopping basket in an experimental online supermarket: a randomized controlled trial
Dimitrios A. Koutoukidis et al. · International Journal of Behavioral Nutrition and Physical Activity · 2019
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