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Protocol for a pilot randomised controlled trial of an intervention to increase the use of traffic light food labelling in UK shoppers (the FLICC trial)

Scarborough, P, Hodgkins, C, Raats, MM, Harrington, RA, Cowburn, G, Dean, M, Doherty, A, Foster, C, Juszczak, E, Matthews, A, Mizdrak, A, Ni Mhurchu, C, Shepherd, R, Tiomotijevic, L, Winstone, N and Rayner, M (2015) Protocol for a pilot randomised controlled trial of an intervention to increase the use of traffic light food labelling in UK shoppers (the FLICC trial) Pilot and Feasibility Studies, 1, 21.

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Abstract

Background Traffic light labelling of foods—a system that incorporates a colour-coded assessment of the level of total fat, saturated fat, sugar and salt on the front of packaged foods—has been recommended by the UK Government and is currently in use or being phased in by many UK manufacturers and retailers. This paper describes a protocol for a pilot randomised controlled trial of an intervention designed to increase the use of traffic light labelling during real-life food purchase decisions. Methods/design The objectives of this two-arm randomised controlled pilot trial are to assess recruitment, retention and data completion rates, to generate potential effect size estimates to inform sample size calculations for the main trial and to assess the feasibility of conducting such a trial. Participants will be recruited by email from a loyalty card database of a UK supermarket chain. Eligible participants will be over 18 and regular shoppers who frequently purchase ready meals or pizzas. The intervention is informed by a review of previous interventions encouraging the use of nutrition labelling and the broader behaviour change literature. It is designed to impact on mechanisms affecting belief and behavioural intention formation as well as those associated with planning and goal setting and the adoption and maintenance of the behaviour of interest, namely traffic light label use during purchases of ready meals and pizzas. Data will be collected using electronic sales data via supermarket loyalty cards and web-based questionnaires and will be used to estimate the effect of the intervention on the nutrition profile of purchased ready meals and pizzas and the behavioural mechanisms associated with label use. Data collection will take place over 48 weeks. A process evaluation including semi-structured interviews and web analytics will be conducted to assess feasibility of a full trial. Discussion The design of the pilot trial allows for efficient recruitment and data collection. The intervention could be generalised to a wider population if shown to be feasible in the main trial. Trial registration ISRCTN: ISRCTN19316955 webcite

Item Type: Article
Subjects : Psychology
Divisions : Faculty of Health and Medical Sciences > School of Psychology
Authors :
AuthorsEmailORCID
Scarborough, PUNSPECIFIEDUNSPECIFIED
Hodgkins, CUNSPECIFIEDUNSPECIFIED
Raats, MMUNSPECIFIEDUNSPECIFIED
Harrington, RAUNSPECIFIEDUNSPECIFIED
Cowburn, GUNSPECIFIEDUNSPECIFIED
Dean, MUNSPECIFIEDUNSPECIFIED
Doherty, AUNSPECIFIEDUNSPECIFIED
Foster, CUNSPECIFIEDUNSPECIFIED
Juszczak, EUNSPECIFIEDUNSPECIFIED
Matthews, AUNSPECIFIEDUNSPECIFIED
Mizdrak, AUNSPECIFIEDUNSPECIFIED
Ni Mhurchu, CUNSPECIFIEDUNSPECIFIED
Shepherd, RUNSPECIFIEDUNSPECIFIED
Tiomotijevic, LUNSPECIFIEDUNSPECIFIED
Winstone, NUNSPECIFIEDUNSPECIFIED
Rayner, MUNSPECIFIEDUNSPECIFIED
Date : 6 June 2015
Identification Number : https://doi.org/10.1186/s40814-015-0015-1
Uncontrolled Keywords : Food, Nutrition, Nutrition labelling, Traffic light labelling, Trial
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:30
Last Modified : 04 Apr 2017 08:48
URI: http://epubs.surrey.ac.uk/id/eprint/808717

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