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11-Nov-2026
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Arch Hellen Med, 44(1), January-February 2027, 83-87 ORIGINAL PAPER Translation and validation of the Diabetes Knowledge Questionnaire-Revised into Greek Ε. Lykoudi,1 Ε. Vlachou,1 Ε. Dokoutsidou,1 Κ. Iliopoulou,2 Ο. Govina,1 Ν. Margari1 |
OBJECTIVE The translation and psychometric evaluation of the Diabetes Knowledge Questionnaire-Revised (DKQ-R) into the Greek language, in order to assess the level of knowledge of patients with type 2 diabetes mellitus (T2DM).
METHOD A cross-sectional study was conducted on a convenience sample of 30 patients with T2DM, with a mean age of 61.2 years. Data collection took place during December 2024 and January 2025. To assess the reliability, the test-retest method was used; Cohen's kappa (κ) and intraclass correlation coefficients (ICC) were calculated. Spearman correlation coefficients were calculated to check the validity. The two-sided level of statistical significance was set at 0.05.
RESULTS The Spearman correlation coefficient between the DKQ-R score and the educational level was 0.40 (p-value=0.03) in the first measurement and 0.44 (p-value=0.02) in the second. Thus, a higher level of education was associated with more knowledge. Therefore, both correlations were positive and statistically significant. The ICC between the initial and repeated measurements was 0.968 (95% confidence interval: 0.933–0.985, p<0.001). The KR-20 values were 0.662 and 0.655, respectively.
CONCLUSIONS The Greek version of the DKQ-R proved to be reliable and valid, making it a useful tool for assessing the knowledge of patients with T2DM.
Key words: Diabetes mellitus type 2, Knowledge, Psychometric validation, Reliability, Translation.
