Psychometric Properties of the Diabetes Management Self-Efficacy Scale in Korean Patients with Type 2 Diabetes

Abstract EN

Objectives.

The aims of this study were to perform a cultural translation of the DMSES and evaluate the psychometric properties of the translated scale in a Korean population with type 2 diabetics.

Methods.

This study was conducted in patients with diabetes recruited from university hospitals.

The first stage of this study involved translating the DMSES into Korean using a forward- and backward-translation technique.

The content validity was assessed by an expert group.

In the second stage, the psychometric properties of the Korean version of the DMSES (K-DMSES) were evaluated.

Results.

The content validity of the K-DMSES was satisfactory.

Sixteen-items clustered into four-subscales were extracted by exploratory factor analysis, and supported by confirmatory factor analysis.

The construct validity of the K-DMSES with the Summary of Diabetes Self-Care Activities scale was satisfactory (r=0.50, P<0.001).

The Cronbach’s alpha and intraclass correlation coefficient were 0.92 and 0.85 (P<0.001; 95% CI=0.75–0.91), respectively, which indicate excellent internal consistency reliability and test-retest reliability.

Conclusions.

The K-DMSES is a brief instrument that has demonstrated good psychometric properties.

It is therefore feasible to use in practice, and is ready for use in clinical research involving Korean patients with type 2 diabetes.