Older adults' comprehension of probabilistic risk expressions in a vaccine information statement: A teach-back approach

Cara Bailey Fausset, Wendy A. Rogers, Arthur D. Fisk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The probability of a risk can be expressed in various formats such as percentages, frequencies, or words. People must be able to understand these probabilistic risk expressions to make informed decisions about their health. However, research has shown that people, especially older adults, have difficulty comprehending probabilities (e.g., Gigerenzer, Gaissmaier, Kurz-Milcke, Schwartz, & Woloshin, 2007; Kutner, Greenberg, & Baer, 2005; Lipkus, Samsa, & Rimer, 2001). In this study, the relationship between the probability risk format (frequency, percentage, or words) and how older adults described and understood the probabilistic information was examined using a teach-back approach and a recall test. Four females and one male participated; mean age was 73.2 years (SD=5.2). The results suggest that people do attend to probabilistic risk information and that presenting risk probabilities using words or percentages supports comprehension.

Original languageEnglish (US)
Title of host publicationProceedings of the Human Factors and Ergonomics Society 55th Annual Meeting, HFES 2011
Pages1975-1979
Number of pages5
DOIs
StatePublished - Nov 28 2011
Externally publishedYes
Event55th Human Factors and Ergonomics Society Annual Meeting, HFES 2011 - Las Vegas, NV, United States
Duration: Sep 19 2011Sep 23 2011

Publication series

NameProceedings of the Human Factors and Ergonomics Society
ISSN (Print)1071-1813

Other

Other55th Human Factors and Ergonomics Society Annual Meeting, HFES 2011
CountryUnited States
CityLas Vegas, NV
Period9/19/119/23/11

ASJC Scopus subject areas

  • Human Factors and Ergonomics

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