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Measurement of confidence: the development and psychometric evaluation of a stroke specific, measure of confidence

Horne, Jane; Lincoln, Nadina; Logan, Pip


Senior Research Fellow

Nadina Lincoln

Professor of Rehabilitation Research


Objective: To design, develop and psychometrically evaluate a stroke specific measure of confidence, the Confidence after Stroke Measure (CaSM)
Design: Cross-sectional
Setting: Adults in the community
Participants: Stroke survivors and healthy elderly participants
Methods: Questionnaire items were generated based on the literature and qualitative interviews and piloted with expert groups to establish face validity. A 53-item CaSM was administered to stroke survivors and healthy elderly participants in the community. A second copy was posted four weeks later. Completed questionnaires were analysed for extreme responses, missing values, construct validity (factor analysis), convergent validity, divergent validity and reliability (internal consistency and temporal stability) and comparing responses according to age and gender.
Results: Stroke (n =101) and healthy elderly participants (n=101) returned questionnaires. Eight items were removed that had extreme responses and large numbers of missing values. Six items had Item total correlations


Horne, J., Lincoln, N., & Logan, P. (2017). Measurement of confidence: the development and psychometric evaluation of a stroke specific, measure of confidence. Clinical Rehabilitation, 31(11), 1529-1537. doi:10.1177/0269215517705424

Journal Article Type Article
Acceptance Date Mar 26, 2017
Online Publication Date May 3, 2017
Publication Date Nov 1, 2017
Deposit Date Apr 20, 2017
Publicly Available Date
Journal Clinical Rehabilitation
Print ISSN 0269-2155
Electronic ISSN 1477-0873
Publisher SAGE Publications (UK and US)
Peer Reviewed Peer Reviewed
Volume 31
Issue 11
Pages 1529-1537
Public URL
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf