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Validity and reliability of the DMSES UK : a measure of self-efficacy for type 2 diabetes self-management

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Sturt, Jackie, Hearnshaw, Hilary and Wakelin, M. (2010) Validity and reliability of the DMSES UK : a measure of self-efficacy for type 2 diabetes self-management. Primary Health Care Research and Development, Vol.11 (No.4). pp. 374-381. doi:10.1017/S1463423610000101

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Official URL: http://dx.doi.org/10.1017/S1463423610000101

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Abstract

Objectives Self-efficacy is an important outcome measure of self-management interventions. We aimed to establish UK validity and reliability of the diabetes management self-efficacy scale (DMSES).

Methods The 20 item DMSES was available for Dutch and US populations. Consultation with people with type 2 diabetes and health professionals established UK content and face validity resulting in item reduction to 15. Participants were adults with type 2 diabetes enrolled in a randomised controlled trial (RCT) of the diabetes manual, a self-management education intervention, with an HbA1c over 7% and who understood English. Baseline trial data and follow-up control group data were used.

Results A total of 175 participants completed all 15 items. Pearson’s correlation coefficient of −0.46 (P < 0.0001) between the DMSES UK and the problem areas in diabetes scale demonstrated criterion validity. Intra-class correlation between data from 67 of these participants was 0.77, demonstrating test-retest reliability. The correlation coefficients between item scores and total scores were >0.30. Cronbach’s alpha was 0.89 over all items.

Conclusion This evaluation demonstrates that the scale has good internal reliability, internal consistency, construct validity, criterion validity, and test-retest reliability.

Practice Implications The 15 item DMSES UK is suitable for use in research and clinical settings to measure the self-efficacy of people living with type 2 diabetes in managing their diabetes.

Item Type: Journal Article
Subjects: R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
R Medicine > RC Internal medicine
Divisions: Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Translational & Experimental Medicine > Metabolic and Vascular Health (- until July 2016)
Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Non-insulin-dependent diabetes, Patient self-monitoring, Clinical trials -- Great Britain, Medical care -- Evaluation
Journal or Publication Title: Primary Health Care Research and Development
Publisher: Cambridge University Press
ISSN: 1463-4236
Official Date: 22 June 2010
Dates:
DateEvent
22 June 2010Published
Volume: Vol.11
Number: No.4
Page Range: pp. 374-381
DOI: 10.1017/S1463423610000101
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Diabetes UK, Great Britain. Dept. of Health (DoH)

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