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

Samuel G. Smith*, Rosalind Raine, Austin Obichere, Michael S. Wolf, Jane Wardle, Christian von Wagner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)261-272
Number of pages12
JournalJournal of Behavioral Medicine
Volume38
Issue number2
DOIs
StatePublished - Apr 2015

Keywords

  • Colorectal cancer
  • Fuzzy-Trace Theory
  • Gist
  • Health communication
  • Numeracy
  • Screening

ASJC Scopus subject areas

  • Psychology(all)
  • Psychiatry and Mental health

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