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Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/74271

Type: Journal article
Title: The impact of computer self-efficacy, computer anxiety, and perceived usability and acceptability on the efficacy of a decision support tool for colorectal cancer screening
Author: Lindblom, Katrina Lesley
Gregory, Tess Anne
Wilson, Carlene June
Flight, Ingrid Helen Kowalewski
Zajac, Ian Taylor
Citation: Journal of the American Medical Informatics Association, 2012; 19(3):407-412
Publisher: American Medical Informatics Association
Issue Date: 2012
ISSN: 1067-5027
1527-974X
School/Discipline: School of Psychology
Statement of
Responsibility: 
Katrina Lindblom, Tess Gregory, Carlene Wilson, Ingrid H.K. Flight and Ian Zajac
Abstract: OBJECTIVE: This study investigated the efficacy of an internet-based personalized decision support (PDS) tool designed to aid in the decision to screen for colorectal cancer (CRC) using a fecal occult blood test. We tested whether the efficacy of the tool in influencing attitudes to screening was mediated by perceived usability and acceptability, and considered the role of computer self-efficacy and computer anxiety in these relationships. METHODS: Eighty-one participants aged 50–76 years worked through the on-line PDS tool and completed questionnaires on computer self-efficacy, computer anxiety, attitudes to and beliefs about CRC screening before and after exposure to the PDS, and perceived usability and acceptability of the tool. RESULTS: Repeated measures ANOVA found that PDS exposure led to a significant increase in knowledge about CRC and screening, and more positive attitudes to CRC screening as measured by factors from the Preventive Health Model. Perceived usability and acceptability of the PDS mediated changes in attitudes toward CRC screening (but not CRC knowledge), and computer self-efficacy and computer anxiety were significant predictors of individuals' perceptions of the tool. CONCLUSION: Interventions designed to decrease computer anxiety, such as computer courses and internet training, may improve the acceptability of new health information technologies including internet-based decision support tools, increasing their impact on behavior change.
Rights: Copyright © 2012 by the American Medical Informatics Association. All rights reserved.
RMID: 0020118462
DOI: 10.1136/amiajnl-2011-000225
Appears in Collections:Psychology publications
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