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01-04-2015 | Uitgave 2/2015 Open Access

Journal of Behavioral Medicine 2/2015

The effect of a supplementary (‘gist-based’) information leaflet on colorectal cancer knowledge and screening intention: a randomized controlled trial

Tijdschrift:
Journal of Behavioral Medicine > Uitgave 2/2015
Auteurs:
Samuel G. Smith, Rosalind Raine, Austin Obichere, Michael S. Wolf, Jane Wardle, Christian von Wagner
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Electronic supplementary material

The online version of this article (doi:10.​1007/​s10865-014-9596-z) contains supplementary material, which is available to authorized users.

Abstract

Guided by Fuzzy Trace Theory, this study examined the impact of a ‘Gist-based’ leaflet on colorectal cancer screening knowledge and intentions; and tested the interaction with participants’ numerical ability. Adults aged 45–59 years from four UK general practices were randomly assigned to receive standard information (‘The Facts’, n = 2,216) versus standard information plus ‘The Gist’ leaflet (Gist + Facts, n = 2,236). Questionnaires were returned by 964/4,452 individuals (22 %). 82 % of respondents reported having read the information, but those with poor numeracy were less likely (74 vs. 88 %, p < .001). The ‘Gist + Facts’ group were more likely to reach the criterion for adequate knowledge (95 vs. 91 %; p < .01), but this was not moderated by numeracy. Most respondents (98 %) intended to participate in screening, with no group differences and no interaction with numeracy. The improved levels of knowledge and self-reported reading suggest ‘The Gist’ leaflet may increase engagement with colorectal cancer screening, but ceiling effects reduced the likelihood that screening intentions would be affected.

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Supplementary material 1 (PDF 325 kb)
10865_2014_9596_MOESM1_ESM.pdf
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