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

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 20.46 (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 selfefficacy of people living with type 2 diabetes in managing their diabetes.

Systematic review of the psychometric properties and theoretical grounding of instruments evaluating self‐care in people with type 2 Diabetes Mellitus

“…, ), the Diabetes Management Self‐efficacy Scale (DMSES, UK version) (Sturt et al . ) or the Patient‐perceived Difficulty in Diabetes Treatment Scale (PDDT) (Tamir et al . ), up to 14, as in the Diabetes Care Profile (Fitzgerald et al .…”

Effects of message‐framed informational videos on diabetes management knowledge and self‐efficacy

“…The researcher adapted the Diabetes Management Self-Efficacy Scale (Sturt, Hearnshaw, & Wakelin, 2010) to determine the participants' diabetes management self-efficacy after permission was secured from the original authors. A forward and backward translation from English and Filipino was conducted by two independent language experts based on the methods used by Wu et al (2008).…”

Study Protocol: The Norfolk Diabetes Prevention Study [NDPS]: a 46 month multi - centre, randomised, controlled parallel group trial of a lifestyle intervention [with or without additional support from lay lifestyle mentors with Type 2 diabetes] to prevent transition to Type 2 diabetes in high risk groups with non - diabetic hyperglycaemia, or impaired fasting glucose

“…This will be undertaken if the primary comparison between intervention groups in Project 2 end is not significant. In Project 4 in addition to these secondary end points we also collect diabetes specific questionnaire data on Diabetes Treatment Satisfaction Questionnaire [DTSQs] and Diabetes Management Self-Efficacy Scale [DMSES] at each time point [40, 41]. In Project 3 the primary objective is to recruit, train and retain volunteers with T2DM to be DPMs.…”