Risk communication formats for low probability events: an exploratory study of patient preferences.

BMC Medical Informatics and Decision Making
James G Dolan, Stephen Iadarola

Abstract

Clear communication about the possible outcomes of proposed medical interventions is an integral part of medical care. Despite its importance, there have been few studies comparing different formats for presenting probabilistic information to patients, especially when small probabilities are involved. The purpose of this study was to explore the potential usefulness of several new small-risk graphic communication formats. Information about the likelihoods of cancer and cancer prevention associated with two hypothetical cancer screening programs were used to create an augmented bar chart, an augmented grouped icon display, a flow chart, and three paired combinations of these formats. In the study scenario, the baseline risk of cancer was 53 per 1,000 (5.3%). The risk associated with cancer screening option A was 38 per 1,000 (3.8%) and the risk associated with screening option B was 29 per 1,000 (2.9%). Both the augmented bar chart and the augmented grouped icon display contained magnified views of the differences in cancer risk and cancer prevention associated with the screening programs. A convenience sample of 29 subjects (mean age 56.4 years; 76% men) used the Analytic Hierarchy Process (AHP) to indicate their relative prefe...Continue Reading

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Sep 10, 2011·Science·David SpiegelhalterIan Short
Sep 6, 2013·Annual Review of Genomics and Human Genetics·Denise M LautenbachRobert C Green
May 24, 2012·Medical Decision Making : an International Journal of the Society for Medical Decision Making·James G DolanPeter J Veazie
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