J Am Med Inform Assoc - 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.

Tópicos

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Resumo

JECTIVE: 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.

Resumo Limpo

jectiv studi investig efficaci internetbas person decis support pds tool design aid decis screen colorect cancer crc use fecal occult blood test test whether efficaci tool influenc attitud screen mediat perceiv usabl accept consid role comput selfefficaci comput anxieti relationshipsmethod eightyon particip age year work onlin pds tool complet questionnair comput selfefficaci comput anxieti attitud belief crc screen exposur pds perceiv usabl accept toolresult repeat measur anova found pds exposur led signific increas knowledg crc screen posit attitud crc screen measur factor prevent health model perceiv usabl accept pds mediat chang attitud toward crc screen crc knowledg comput selfefficaci comput anxieti signific predictor individu percept toolconclus intervent design decreas comput anxieti comput cours internet train may improv accept new health inform technolog includ internetbas decis support tool increas impact behavior chang

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