Evidence map›Paper›PMID 25434293›Full record

Trial reportPublic health nutrition2015

The effect of changes in visibility and price on fruit purchasing at a university cafeteria in Lima, Peru.

María Kathia Cárdenas, Catherine P Benziger, Timesh D Pillay, J Jaime Miranda

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in Public health nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 6 pooled it
5.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 6 syntheses or guidelines pooled it, 34 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 3 countries.

María Kathia Cárdenas1CRONICAS Center of Excellence in Chronic Diseases,Universidad Peruana Cayetano Heredia,Av. Armendariz 497,Miraflores,Lima-18,Peru.
Catherine P Benziger2Department of Cardiology,University of Washington,Seattle,WA,USA.
Timesh D Pillay3Medical School,University College London,London,UK.
J Jaime Miranda1CRONICAS Center of Excellence in Chronic Diseases,Universidad Peruana Cayetano Heredia,Av. Armendariz 497,Miraflores,Lima-18,Peru.
Universidad Peruana Cayetano Heredia · PEUniversity College London · GBUniversity of Washington · US

Funding

Fogarty International Clinical Research Scholars Support Center @ Vanderbilt-AAMCR24TW007988 · FIC · VANDERBILT UNIVERSITY · PI VERMUND, STEN H. · 2007 to 2011
$27.6M
FIC NIH HHS R24 TW007988NHLBI NIH HHS HHSN268200900033C
6 · The paper itself

Abstract

objectiveTo determine the effect of increasing fruit visibility, adding information and lowering price on fruit purchasing at a university cafeteria in Lima, Peru.

designQuasi-experimental pilot study of a three-phase stepped intervention. In Phase 1, fruit was displayed >3 m from the point of purchase with no additional information. Phase 2 consisted in displaying the fruit near the point of purchase with added health and price information. Phase 3 added a 33% price reduction. The duration of each phase was 3 weeks and phases were separated by 2-week breaks. Primary outcomes were total pieces of fruit and number of meals sold daily.

settingA university cafeteria in Lima, Peru. SUBJECTS: Approximately 150 people, students and non-student adults, who purchased food daily. Twelve students participated in post-intervention interviews.

resultsFruit purchasing doubled from Phase 1 to Phase 3 (P<0·01) and remained significant after adjusting for the number of meals sold daily (P<0·05). There was no evidence of a difference in fruit sold between the other phases. Females purchased 100% of the fruit in Phase 1, 82% in Phase 2 and 67% in Phase 3 (P<0·01). Males increased their purchasing significantly between Phase 1 and 3 (P<0·01). Non-student adults purchased more fruit with each phase (P<0·05) whereas students did not. Qualitatively, the most common reason for not purchasing fruit was a marked preference to buy unhealthy snack foods.

conclusionsPromoting fruit consumption by product placement close to the point of purchase, adding health information and price reduction had a positive effect on fruit purchasing in a university cafeteria, especially in males and non-student adults.

Indexed as

AwarenessCommerceDietFood PreferencesFood ServicesFruitUniversitiesAdolescentAdultChoice BehaviorConsumer BehaviorFemaleFood LabelingHealthHumansMaleFood accessibilityFruitHealth promotionPrice

Identifiers

PMID25434293
PMCPMC5454487
OpenAlexW2117115470

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.