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Randomised controlled trial
A decision aid to support informed choice about bowel cancer screening in people with low educational level improves knowledge but reduces screening uptake
  1. Christian von Wagner
  1. Department of Epidemiology and Public Health, University College London, London, UK
  1. Correspondence to: Christian von Wagner
    Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT, UK; c.wagner{at}ucl.ac.uk

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Colorectal cancer (CRC) accounts for 9% of cancer deaths worldwide, making it the second leading cause of cancer death.1 Survival is strongly related to the stage of disease, with up to 90% of CRC deaths estimated to be preventable if the disease is diagnosed at an early stage.2 Randomised controlled trial data show that annual or biennial screening using faecal occult blood testing (FOBT) reduces mortality by up to 27% in those who use the test.3

Smith and colleagues tested the effectiveness of a decision aid in facilitating understanding, involvement and informed choice about participating in screening for bowel cancer using the FOBT. Using a randomised controlled trial design, 572 adults aged between 55 and 64 from a socioeconomically deprived area in New …

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