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Br J Cancer. 2014 Oct 28;111(9):1831-5. doi: 10.1038/bjc.2014.482. Epub 2014 Aug 28.

A survey study of women's responses to information about overdiagnosis in breast cancer screening in Britain.

Author information

  • 1Health Behaviour Research Centre, Department of Epidemiology & Public Health, UCL, Gower Street, London WC1E 6BT, UK.
  • 2Cancer Research UK, Angel Building, 407 St John Street, London EC1V 4AD, UK.

Abstract

BACKGROUND:

There is concern about public understanding of overdiagnosis in breast cancer screening, and uncertainty about the likely impact on screening participation.

METHODS:

In a population-based survey of 2272 women, we assessed understanding of overdiagnosis and screening intentions before and after exposure to an explanation of overdiagnosis, and one of the three information formats providing an estimate of the rate of overdiagnosis based on the findings of the UK Independent Review.

RESULTS:

Subjective and objective comprehension of overdiagnosis was moderate across information formats (64% and 57%, respectively). Following overdiagnosis information, 7% of women showed a decrease in screening intention, with a stronger effect among women below screening age (<47 years), and receiving the estimate of the rate of overdiagnosis in a simple ratio format (one life saved to three overdiagnoses).

CONCLUSIONS:

Brief written information on overdiagnosis was incompletely understood, but reduced breast screening intentions in a proportion of women, regardless of comprehension. Subjective comprehension was lower among women who had not yet reached screening age but the deterrent effect was higher.

PMID:
25167224
PMCID:
PMC4453735
DOI:
10.1038/bjc.2014.482
[PubMed - indexed for MEDLINE]
Free PMC Article
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