Effects of front-of-package nutrition labelling systems on understanding and purchase intention in Jamaica: results from a multiarm randomised control

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Título

Effects of front-of-package nutrition labelling systems on understanding and purchase intention in Jamaica: results from a multiarm randomised control

Tema

JAMAICA
ETIQUETADO
NUTRICION
COMPORTAMIENTO DEL CONSUMIDOR
BIBLIOGRAFIA NACIONAL QUIMICA
2023

Abstract

Objective: To assess the effects of three different front-of-package labelling (FOPL) schemes on objective understanding and intention to purchase of products, in Jamaica.

Setting: Supermarkets in Jamaica.

Participants: Adult supermarket shoppers in Jamaica (n=1206) aged 18 years old or older were included in the study, except for those visually impaired, or unable to give informed consent.

Design: Multiarm parallel-group randomised trial.

Interventions: Participants were randomly allocated to one of the three intervention groups or the control group. They were exposed to two-dimensional images of 12 mock-up products presented in random and balanced order. Participants assigned to the intervention groups were exposed to one FOPL scheme: black octagonal warning labels (OWL), magnifying glass high-in single icon (MGG) or traffic-light labelling (TFL). The control group was exposed to the nutrition facts up front.

Outcome measures: OR for correctly understanding nutritional information (correctly selecting the least harmful option, correctly identifying sugars, sodium and/or saturated fats found to be in excess) and choosing to purchase the least harmful option (purchase intention), more often.

Results: Compared with the control group, the odds for correctly selecting the least harmful option more often were 107% higher in the OWL group (OR 2.07, 95% CI 1.54 to 2.78; p<0.001), whereas the MGG (1.18, 95% CI 0.89 to 1.57; p=0.24) and the TFL (1.13, 95% CI 0.85 to 1.51; p=0.39) were inefficacious in improving such odds. OWL also resulted in the highest odds for correctly identifying a product with excessive amounts of sugars, sodium and/or saturated fats and for deciding to purchase the least harmful option or none of the options.

Conclusions: Octagonal warning labels performed best at improving the ability of adult shoppers in Jamaica to understand the nutrition information and at encouraging them to purchase the least harmful option more often.

Autor

White Barrow, Vanessa
Gomes, Fabio S.
Eyre, Sheerin
Morris, Audrey
Caines, Deonne
Finlay, David

Fuente

BMJ Open v.13, n°4. -- e065620

Editor

BMJ

Fecha

2023

Derechos

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Formato

PDF

Extent

11 p.

Idioma

Inglés

Tipo

Artículo

Identificador

10.1136/ bmjopen-2022-065620

Document Item Type Metadata

Original Format

PDF
Fecha de agregación
June 16, 2023
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
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Citación
White Barrow, Vanessa, “Effects of front-of-package nutrition labelling systems on understanding and purchase intention in Jamaica: results from a multiarm randomised control,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed February 28, 2024, https://riquim.fq.edu.uy/items/show/6639.
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