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  • Primary Health Care Research & Development, Volume 11, Issue 4
  • October 2010, pp. 374-381

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

  • Jackie Sturt (a1), Hilary Hearnshaw (a1) and Melanie Wakelin (a2)
  • DOI:
  • Published online: 22 June 2010

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).


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.


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.


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.

Corresponding author
Correspondence to: Jackie Sturt, Health Sciences Research Institute, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK. Email:
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Primary Health Care Research & Development
  • ISSN: 1463-4236
  • EISSN: 1477-1128
  • URL: /core/journals/primary-health-care-research-and-development
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