4.5 Review

Making decisions on your own: Self-administered decision aids about colorectal cancer screening - A systematic review and meta-analyses

Journal

PATIENT EDUCATION AND COUNSELING
Volume 105, Issue 3, Pages 534-546

Publisher

ELSEVIER IRELAND LTD
DOI: 10.1016/j.pec.2021.07.035

Keywords

Cancer screening; Decision aid; Informed choice; Decisional conflict

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The systematic review found that self-administered decision aids can increase participation and knowledge levels in colorectal cancer screening, but their impact on attitudes towards screening remains inconclusive.
Objective: To provide a systematic review of self-administered decision aids (DAs) for citizens invited to participate in colorectal cancer screening synthesizing the effectiveness of self-administered DAs on informed choice or the components hereof; knowledge, attitudes, and participation. Methods: The literature search was undertaken in PubMed, CINAHL, PsycINFO, Embase and Scopus and last updated 19 March 2021. Results were presented by narrative synthesis, meta-analyses and vote counting based on direction of effect. Results: Fourteen studies of fair methodological quality were included. One study reported on informed choice and 13 studies reported on the components. Self-administered DAs increased participation and knowledge whereas it was inconclusive with regard to attitudes towards screening. The studies were very heterogeneous with different comparators, outcomes and means of measurement. Conclusion: This systematic review showed a potential for self-administered DAs to support informed choice in colorectal cancer screening, especially by increasing knowledge. Practice Implications: It seems reasonable to consider informed choice to be one of the main outcomes of self-administered DAs. Yet there is a need for consensus on how to measure informed choice in cancer screening, especially a validated measurement of knowledge defining what constitutes 'adequate knowledge'. (c) 2021 The Authors. Published by Elsevier B.V.

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