| Title |
Offering within-category food swaps to reduce energy density of food purchases: a study using an experimental online supermarket
|
|---|---|
| Published in |
International Journal of Behavioral Nutrition and Physical Activity, June 2015
|
| DOI | 10.1186/s12966-015-0241-1 |
| Pubmed ID | |
| Authors |
Suzanna E. Forwood, Amy L. Ahern, Theresa M. Marteau, Susan A. Jebb |
| Abstract |
Swaps are often used to encourage healthier food choices, but there is little evidence of their effectiveness. The current study assessed the impact of offering swaps on groceries purchased within a bespoke online supermarket; specifically the objective was to measure the impact on energy density (ED) of food purchases following the offer of lower ED alternatives (a) at point of selection or at checkout, and (b) with or without explicit consent to receive swap prompts METHOD: Participants were asked to complete a 12-item shopping task within an online shopping platform, developed for studying food purchasing. 1610 adults were randomly assigned to a no swap control condition or to one of four interventions: consented swaps at selection; consented swaps at checkout; imposed swaps at selection; or imposed swaps at checkout. Each swap presented two lower ED options from the same category as the participant's chosen food. Swap acceptance rate and purchased food ED were the primary outcomes. Of the mean 12.36 (SD 1.26) foods purchased, intervention participants were offered a mean of 4.1 (SD 1.68) swaps, with the potential to reduce the ED of purchased food (effect (95 % CI): -83 kJ/100 g (-110 - -56), p = <0.0001). A median of one swap (IQR 0 to 2) was accepted, not significantly reducing the purchased food ED (effect (95 % CI): -24 kJ/100 g (4 - -52), p = 0.094). More swaps were accepted when offered at selection than at checkout (OR (95 % CI) = 1.224 (1.11 - 1.35), p < 0.0001), but no differences were seen with consent. Purchased food ED was unaffected by point of swap or consent, but reduced with number of swaps accepted (effect per swap (95 % CI) = -24 kJ/100 g (-35 - -14), p < 0.0001). Within category swaps did not reduce the ED of food purchases reflecting the observation that the use of swaps within an on-line shopping platform offered small potential gains in ED and a minority was accepted. |
X Demographics
The data shown below were collected from the profiles of 15 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 5 | 33% |
| United States | 2 | 13% |
| Rwanda | 1 | 7% |
| Australia | 1 | 7% |
| Unknown | 6 | 40% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 5 | 33% |
| Practitioners (doctors, other healthcare professionals) | 5 | 33% |
| Members of the public | 4 | 27% |
| Science communicators (journalists, bloggers, editors) | 1 | 7% |
Mendeley readers
The data shown below were compiled from readership statistics for 113 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | <1% |
| Unknown | 112 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 20 | 18% |
| Student > Ph. D. Student | 17 | 15% |
| Student > Master | 17 | 15% |
| Student > Bachelor | 13 | 12% |
| Student > Doctoral Student | 8 | 7% |
| Other | 9 | 8% |
| Unknown | 29 | 26% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 13 | 12% |
| Nursing and Health Professions | 11 | 10% |
| Medicine and Dentistry | 11 | 10% |
| Agricultural and Biological Sciences | 9 | 8% |
| Business, Management and Accounting | 9 | 8% |
| Other | 27 | 24% |
| Unknown | 33 | 29% |
Attention Score in Context
This research output has an Altmetric Attention Score of 19. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 May 2017.
All research outputs
#1,911,398
of 25,193,883 outputs
Outputs from International Journal of Behavioral Nutrition and Physical Activity
#681
of 2,098 outputs
Outputs of similar age
#23,370
of 269,718 outputs
Outputs of similar age from International Journal of Behavioral Nutrition and Physical Activity
#15
of 48 outputs
Altmetric has tracked 25,193,883 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 92nd percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,098 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 29.0. This one has gotten more attention than average, scoring higher than 67% of its peers.
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We're also able to compare this research output to 48 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 70% of its contemporaries.